RHSA-2026:59361

Vulnerability from csaf_redhat - Published: 2026-08-25 09:07 - Updated: 2026-08-25 09:47
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: libgit2: * libgit2-1.9.7-1.hum1 (aarch64, x86_64) * libgit2-devel-1.9.7-1.hum1 (aarch64, x86_64) * libgit2-1.9.7-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

A flaw was found in libgit2, a C library for Git functionality. An inverted comparison in the OpenSSL backend's certificate verification logic, specifically when handling IP-literal hosts and certificate IP SubjectAltNames, allows a network attacker to intercept HTTPS connections. By presenting a CA-trusted certificate with any IP SubjectAltName, an attacker can trick libgit2 into accepting a mismatched IP address, leading to the interception of sensitive communication.

CWE-295 - Improper Certificate Validation
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libgit2-main@aarch64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@src
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@x86_64
Vendor Fix fix
Workaround
Threats
Impact Moderate

A flaw was found in libgit2. This vulnerability allows a remote attacker to create directories outside of the intended repository working tree. By crafting a malicious repository that specifies traversal components in a submodule path, applications initializing the submodule can be tricked into creating directories in arbitrary locations on the file system. This could lead to unintended file system modifications or potentially further compromise.

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libgit2-main@aarch64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@src
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@x86_64
Vendor Fix fix
Workaround
Threats
Impact Low

A flaw was found in libgit2. The `git_delta_apply` function incorrectly trusts an attacker-controlled size value from a delta object header, which is used for memory allocation before proper validation of delta instructions. A remote attacker or local user can supply malicious pack data, for example, through `git_clone` or `git_fetch`, to trigger extremely large memory allocations. This can lead to the exhaustion of system memory, resulting in a Denial of Service (DoS).

CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libgit2-main@aarch64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@src
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@x86_64
Vendor Fix fix
Workaround
Threats
Impact Moderate

A flaw was found in libgit2. The built-in HTTP transport component incorrectly handles offsite redirects, leading to the disclosure of sensitive information. An attacker controlling a trusted Git host or an open redirect on that host could exploit this by causing the library to send HTTP Basic credentials or personal access tokens to an unintended third-party server. This vulnerability results in the leakage of user authentication credentials.

CWE-201 - Insertion of Sensitive Information Into Sent Data
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libgit2-main@aarch64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@src
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@x86_64
Vendor Fix fix
Workaround
Threats
Impact Moderate

A flaw was found in libgit2. A fixed-size string comparison in the `set_data` function within `transports/smart_pkt.c` does not adequately verify the size of a network packet buffer. A remote attacker, operating a malicious Git server, can send a specially crafted packet-line capability buffer. This can lead to a heap out-of-bounds read, causing the client application to crash and resulting in a Denial of Service (DoS).

CWE-125 - Out-of-bounds Read
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libgit2-main@aarch64
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@src
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libgit2-main@x86_64
Vendor Fix fix
Workaround
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:59361 self
https://images.redhat.com/ external
https://access.redhat.com/security/cve/CVE-2026-53587 external
https://access.redhat.com/security/updates/classi… external
https://access.redhat.com/security/cve/CVE-2026-53586 external
https://access.redhat.com/security/cve/CVE-2026-53584 external
https://access.redhat.com/security/cve/CVE-2026-53585 external
https://access.redhat.com/security/cve/CVE-2026-53583 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-53583 self
https://bugzilla.redhat.com/show_bug.cgi?id=2520694 external
https://www.cve.org/CVERecord?id=CVE-2026-53583 external
https://nvd.nist.gov/vuln/detail/CVE-2026-53583 external
https://github.com/libgit2/libgit2/commit/647dcb4… external
https://github.com/libgit2/libgit2/commit/c2aa354… external
https://github.com/libgit2/libgit2/commit/ef086bc… external
https://github.com/libgit2/libgit2/releases/tag/v1.8.6 external
https://github.com/libgit2/libgit2/releases/tag/v1.9.5 external
https://github.com/libgit2/libgit2/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-53584 self
https://bugzilla.redhat.com/show_bug.cgi?id=2520695 external
https://www.cve.org/CVERecord?id=CVE-2026-53584 external
https://nvd.nist.gov/vuln/detail/CVE-2026-53584 external
https://github.com/libgit2/libgit2/commit/419637d… external
https://github.com/libgit2/libgit2/commit/467c2d9… external
https://github.com/libgit2/libgit2/commit/ec7371d… external
https://github.com/libgit2/libgit2/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-53585 self
https://bugzilla.redhat.com/show_bug.cgi?id=2520696 external
https://www.cve.org/CVERecord?id=CVE-2026-53585 external
https://nvd.nist.gov/vuln/detail/CVE-2026-53585 external
https://github.com/libgit2/libgit2/commit/0cdfdd5… external
https://github.com/libgit2/libgit2/commit/c1896f0… external
https://github.com/libgit2/libgit2/commit/dec22ac… external
https://github.com/libgit2/libgit2/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-53586 self
https://bugzilla.redhat.com/show_bug.cgi?id=2520691 external
https://www.cve.org/CVERecord?id=CVE-2026-53586 external
https://nvd.nist.gov/vuln/detail/CVE-2026-53586 external
https://github.com/libgit2/libgit2/commit/07de6a7… external
https://github.com/libgit2/libgit2/commit/af2b29a… external
https://github.com/libgit2/libgit2/commit/c1507ab… external
https://github.com/libgit2/libgit2/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-53587 self
https://bugzilla.redhat.com/show_bug.cgi?id=2520693 external
https://www.cve.org/CVERecord?id=CVE-2026-53587 external
https://nvd.nist.gov/vuln/detail/CVE-2026-53587 external
https://github.com/libgit2/libgit2/commit/2c0ce8c… external
https://github.com/libgit2/libgit2/commit/affda60… external
https://github.com/libgit2/libgit2/commit/d7a9fb8… external
https://github.com/libgit2/libgit2/security/advis… external

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for Red Hat Hardened Images RPMs is now available.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "This update includes the following RPMs:\n\nlibgit2:\n  * libgit2-1.9.7-1.hum1 (aarch64, x86_64)\n  * libgit2-devel-1.9.7-1.hum1 (aarch64, x86_64)\n  * libgit2-1.9.7-1.hum1.src (src)",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2026:59361",
        "url": "https://access.redhat.com/errata/RHSA-2026:59361"
      },
      {
        "category": "external",
        "summary": "https://images.redhat.com/",
        "url": "https://images.redhat.com/"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-53587",
        "url": "https://access.redhat.com/security/cve/CVE-2026-53587"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/",
        "url": "https://access.redhat.com/security/updates/classification/"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-53586",
        "url": "https://access.redhat.com/security/cve/CVE-2026-53586"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-53584",
        "url": "https://access.redhat.com/security/cve/CVE-2026-53584"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-53585",
        "url": "https://access.redhat.com/security/cve/CVE-2026-53585"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-53583",
        "url": "https://access.redhat.com/security/cve/CVE-2026-53583"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_59361.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking": {
      "current_release_date": "2026-08-25T09:47:56+00:00",
      "generator": {
        "date": "2026-08-25T09:47:56+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.16"
        }
      },
      "id": "RHSA-2026:59361",
      "initial_release_date": "2026-08-25T09:07:50+00:00",
      "revision_history": [
        {
          "date": "2026-08-25T09:07:50+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-08-25T09:37:07+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-08-25T09:47:56+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Hardened Images",
                "product": {
                  "name": "Red Hat Hardened Images",
                  "product_id": "Red Hat Hardened Images",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:hummingbird:1"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Hardened Images"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libgit2-main@aarch64",
                "product": {
                  "name": "libgit2-main@aarch64",
                  "product_id": "libgit2-main@aarch64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/libgit2@1.9.7-1.hum1?arch=aarch64\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libgit2-main@src",
                "product": {
                  "name": "libgit2-main@src",
                  "product_id": "libgit2-main@src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/libgit2@1.9.7-1.hum1?arch=src\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-source-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libgit2-main@x86_64",
                "product": {
                  "name": "libgit2-main@x86_64",
                  "product_id": "libgit2-main@x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/libgit2@1.9.7-1.hum1?arch=x86_64\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libgit2-main@aarch64 as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:libgit2-main@aarch64"
        },
        "product_reference": "libgit2-main@aarch64",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libgit2-main@src as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:libgit2-main@src"
        },
        "product_reference": "libgit2-main@src",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libgit2-main@x86_64 as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:libgit2-main@x86_64"
        },
        "product_reference": "libgit2-main@x86_64",
        "relates_to_product_reference": "Red Hat Hardened Images"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-53583",
      "cwe": {
        "id": "CWE-295",
        "name": "Improper Certificate Validation"
      },
      "discovery_date": "2026-08-20T19:01:50.430624+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2520694"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libgit2, a C library for Git functionality. An inverted comparison in the OpenSSL backend\u0027s certificate verification logic, specifically when handling IP-literal hosts and certificate IP SubjectAltNames, allows a network attacker to intercept HTTPS connections. By presenting a CA-trusted certificate with any IP SubjectAltName, an attacker can trick libgit2 into accepting a mismatched IP address, leading to the interception of sensitive communication.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libgit2: libgit2: Network attacker can intercept HTTPS connections via inverted IP SubjectAltName comparison",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:libgit2-main@aarch64",
          "Red Hat Hardened Images:libgit2-main@src",
          "Red Hat Hardened Images:libgit2-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-53583"
        },
        {
          "category": "external",
          "summary": "RHBZ#2520694",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520694"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-53583",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-53583"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53583",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53583"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/647dcb432980b84ede4cb5a008bbd1ccb4ead03d",
          "url": "https://github.com/libgit2/libgit2/commit/647dcb432980b84ede4cb5a008bbd1ccb4ead03d"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/c2aa35409ee0e6515df64da49750f13a0a42c47f",
          "url": "https://github.com/libgit2/libgit2/commit/c2aa35409ee0e6515df64da49750f13a0a42c47f"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/ef086bc3e4eedf62be38a910381aae24d49871ff",
          "url": "https://github.com/libgit2/libgit2/commit/ef086bc3e4eedf62be38a910381aae24d49871ff"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/security/advisories/GHSA-h7gc-w2gg-p9xp",
          "url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-h7gc-w2gg-p9xp"
        }
      ],
      "release_date": "2026-08-20T18:39:03.676000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-25T09:07:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:59361"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libgit2: libgit2: Network attacker can intercept HTTPS connections via inverted IP SubjectAltName comparison"
    },
    {
      "cve": "CVE-2026-53584",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "discovery_date": "2026-08-20T19:02:03.289644+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2520695"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libgit2. This vulnerability allows a remote attacker to create directories outside of the intended repository working tree. By crafting a malicious repository that specifies traversal components in a submodule path, applications initializing the submodule can be tricked into creating directories in arbitrary locations on the file system. This could lead to unintended file system modifications or potentially further compromise.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libgit2: libgit2: Submodule path traversal allows arbitrary directory creation",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:libgit2-main@aarch64",
          "Red Hat Hardened Images:libgit2-main@src",
          "Red Hat Hardened Images:libgit2-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-53584"
        },
        {
          "category": "external",
          "summary": "RHBZ#2520695",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520695"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-53584",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-53584"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53584",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53584"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480eab3cd81e7a1",
          "url": "https://github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480eab3cd81e7a1"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf568514b128c",
          "url": "https://github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf568514b128c"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/ec7371da9f359cd8293e9108e7a0b1c1b61b67c4",
          "url": "https://github.com/libgit2/libgit2/commit/ec7371da9f359cd8293e9108e7a0b1c1b61b67c4"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm",
          "url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm"
        }
      ],
      "release_date": "2026-08-20T18:35:10.280000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-25T09:07:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:59361"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "libgit2: libgit2: Submodule path traversal allows arbitrary directory creation"
    },
    {
      "cve": "CVE-2026-53585",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-08-20T19:01:38.839404+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2520696"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libgit2. The `git_delta_apply` function incorrectly trusts an attacker-controlled size value from a delta object header, which is used for memory allocation before proper validation of delta instructions. A remote attacker or local user can supply malicious pack data, for example, through `git_clone` or `git_fetch`, to trigger extremely large memory allocations. This can lead to the exhaustion of system memory, resulting in a Denial of Service (DoS).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libgit2: libgit2: Denial of Service via Unbounded Memory Allocation",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:libgit2-main@aarch64",
          "Red Hat Hardened Images:libgit2-main@src",
          "Red Hat Hardened Images:libgit2-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-53585"
        },
        {
          "category": "external",
          "summary": "RHBZ#2520696",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520696"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-53585",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-53585"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53585",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53585"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/0cdfdd5fa8f8514c82413025e1e0808866cf7c30",
          "url": "https://github.com/libgit2/libgit2/commit/0cdfdd5fa8f8514c82413025e1e0808866cf7c30"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/c1896f06df22cc0ca5658df3a8f6cd7ede4cd6ae",
          "url": "https://github.com/libgit2/libgit2/commit/c1896f06df22cc0ca5658df3a8f6cd7ede4cd6ae"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/dec22ac01ad9620c96b7b9ac3ef636ea46d43bed",
          "url": "https://github.com/libgit2/libgit2/commit/dec22ac01ad9620c96b7b9ac3ef636ea46d43bed"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/security/advisories/GHSA-27m5-gxxh-x79j",
          "url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-27m5-gxxh-x79j"
        }
      ],
      "release_date": "2026-08-20T18:37:44.115000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-25T09:07:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:59361"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, avoid cloning or fetching from untrusted Git repositories. Restricting access to systems that perform Git operations on untrusted data can also reduce exposure.",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libgit2: libgit2: Denial of Service via Unbounded Memory Allocation"
    },
    {
      "cve": "CVE-2026-53586",
      "cwe": {
        "id": "CWE-201",
        "name": "Insertion of Sensitive Information Into Sent Data"
      },
      "discovery_date": "2026-08-20T19:01:01.952486+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2520691"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libgit2. The built-in HTTP transport component incorrectly handles offsite redirects, leading to the disclosure of sensitive information. An attacker controlling a trusted Git host or an open redirect on that host could exploit this by causing the library to send HTTP Basic credentials or personal access tokens to an unintended third-party server. This vulnerability results in the leakage of user authentication credentials.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libgit2: libgit2: Information disclosure via HTTP redirect allows credential leakage",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:libgit2-main@aarch64",
          "Red Hat Hardened Images:libgit2-main@src",
          "Red Hat Hardened Images:libgit2-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-53586"
        },
        {
          "category": "external",
          "summary": "RHBZ#2520691",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520691"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-53586",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-53586"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53586",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53586"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/07de6a7e438f95ac9a6efd3222a82117e871ed27",
          "url": "https://github.com/libgit2/libgit2/commit/07de6a7e438f95ac9a6efd3222a82117e871ed27"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/af2b29ad0a74d5bac9751376879ddaf848136d3b",
          "url": "https://github.com/libgit2/libgit2/commit/af2b29ad0a74d5bac9751376879ddaf848136d3b"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/c1507abc44647b3acd832a33a5b1c8c9f5ba8821",
          "url": "https://github.com/libgit2/libgit2/commit/c1507abc44647b3acd832a33a5b1c8c9f5ba8821"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/security/advisories/GHSA-2889-x8f6-mc4x",
          "url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-2889-x8f6-mc4x"
        }
      ],
      "release_date": "2026-08-20T18:40:08.673000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-25T09:07:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:59361"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libgit2: libgit2: Information disclosure via HTTP redirect allows credential leakage"
    },
    {
      "cve": "CVE-2026-53587",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "discovery_date": "2026-08-20T19:01:29.868086+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2520693"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libgit2. A fixed-size string comparison in the `set_data` function within `transports/smart_pkt.c` does not adequately verify the size of a network packet buffer. A remote attacker, operating a malicious Git server, can send a specially crafted packet-line capability buffer. This can lead to a heap out-of-bounds read, causing the client application to crash and resulting in a Denial of Service (DoS).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libgit2: libgit2: Denial of Service due to heap out-of-bounds read from malicious Git server",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:libgit2-main@aarch64",
          "Red Hat Hardened Images:libgit2-main@src",
          "Red Hat Hardened Images:libgit2-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-53587"
        },
        {
          "category": "external",
          "summary": "RHBZ#2520693",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520693"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-53587",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-53587"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53587",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53587"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/2c0ce8c0132ac38ab0db28239462a671e2e5440e",
          "url": "https://github.com/libgit2/libgit2/commit/2c0ce8c0132ac38ab0db28239462a671e2e5440e"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/affda60c10fcef16723451c0d7dc71b71dc20ad3",
          "url": "https://github.com/libgit2/libgit2/commit/affda60c10fcef16723451c0d7dc71b71dc20ad3"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/commit/d7a9fb87f504434e9f45228678953c4fa56e7640",
          "url": "https://github.com/libgit2/libgit2/commit/d7a9fb87f504434e9f45228678953c4fa56e7640"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.8.6"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5",
          "url": "https://github.com/libgit2/libgit2/releases/tag/v1.9.5"
        },
        {
          "category": "external",
          "summary": "https://github.com/libgit2/libgit2/security/advisories/GHSA-pm24-4jhq-3xvm",
          "url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-pm24-4jhq-3xvm"
        }
      ],
      "release_date": "2026-08-20T18:36:43.055000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-25T09:07:50+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:59361"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libgit2-main@aarch64",
            "Red Hat Hardened Images:libgit2-main@src",
            "Red Hat Hardened Images:libgit2-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "libgit2: libgit2: Denial of Service due to heap out-of-bounds read from malicious Git server"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Loading…