Vulnerability-Lookup

CVE-2026-15711 (GCVE-0-2026-15711)

Vulnerability from cvelistv5 – Published: 2026-07-14 19:45 – Updated: 2026-07-15 14:11

Title

Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation

Summary

A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 §5.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-15 14:10 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

redhat redhat root

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-15711	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2499924	issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/libsoup/-/issues/515

Impacted products

5 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-07-14 09:52

Credits

Red Hat would like to thank Sebastián Alba Vives (@Sebasteuo / 0xS4bb1) for reporting this issue.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-15711

Vulnerability from fkie_nvd - Published: 2026-07-14 20:16 - Updated: 2026-07-15 18:20

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-15711
	secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2499924
	secalert@redhat.com	https://gitlab.gnome.org/GNOME/libsoup/-/issues/515
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://gitlab.gnome.org/GNOME/libsoup/-/issues/515

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "role": "CISA Coordinator",
          "timestamp": "2026-07-15T14:10:43.407984Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-14T20:16:57.177",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-15711"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499924"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/515"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/515"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}

GHSA-W948-QRW5-CFFC

Vulnerability from github – Published: 2026-07-14 21:32 – Updated: 2026-07-14 21:32

Details

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-15711"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-14T20:16:57Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability was found in libsoup\u0027s WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 \u00a75.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.",
  "id": "GHSA-w948-qrw5-cffc",
  "modified": "2026-07-14T21:32:16Z",
  "published": "2026-07-14T21:32:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15711"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-15711"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499924"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/515"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-15711

Vulnerability from csaf_microsoft - Published: 2026-07-17 01:01 - Updated: 2026-07-17 01:01

Summary

Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

CVE-2026-15711

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-770 - Allocation of Resources Without Limits or Throttling

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
Unresolved product id: 17084-1		—	None Available

References

4 references

URL	Category
https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self
https://support.microsoft.com/lifecycle	external
https://www.first.org/cvss	external
https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self

JSON

To clipboard

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-15711 Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-15711.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation",
    "tracking": {
      "current_release_date": "2026-07-17T01:01:32.000Z",
      "generator": {
        "date": "2026-07-17T07:03:59.708Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-15711",
      "initial_release_date": "2026-07-17T01:01:32.000Z",
      "revision_history": [
        {
          "date": "2026-07-17T01:01:32.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 libsoup 0:3.4.4-16.azl3",
                "product": {
                  "name": "azl3 libsoup 0:3.4.4-16.azl3",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "libsoup"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 libsoup 0:3.4.4-16.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-15711",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "notes": [
        {
          "category": "general",
          "text": "redhat",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_affected": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-15711 Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-15711.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-07-17T01:01:32.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "environmentalScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "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": [
            "17084-1"
          ]
        }
      ],
      "title": "Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation"
    }
  ]
}

ubuntu-cve-2026-15711

Vulnerability from osv_ubuntu

Published

2026-07-14 20:16

Modified

2026-07-14 20:16

Summary

Details

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-15711	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-15711	REPORT
	https://access.redhat.com/security/cve/CVE-2026-15711	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2499924	REPORT
	https://gitlab.gnome.org/GNOME/libsoup/-/issues/515	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.52.2-1ubuntu0.3+esm6"
          },
          {
            "binary_name": "libsoup-gnome2.4-1",
            "binary_version": "2.52.2-1ubuntu0.3+esm6"
          },
          {
            "binary_name": "libsoup2.4-1",
            "binary_version": "2.52.2-1ubuntu0.3+esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libsoup2.4",
        "purl": "pkg:deb/ubuntu/libsoup2.4@2.52.2-1ubuntu0.3+esm6?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.50.0-2debian1",
        "2.52.1-1",
        "2.52.2-1",
        "2.52.2-1ubuntu0.1",
        "2.52.2-1ubuntu0.2",
        "2.52.2-1ubuntu0.3",
        "2.52.2-1ubuntu0.3+esm1",
        "2.52.2-1ubuntu0.3+esm2",
        "2.52.2-1ubuntu0.3+esm3",
        "2.52.2-1ubuntu0.3+esm4",
        "2.52.2-1ubuntu0.3+esm5",
        "2.52.2-1ubuntu0.3+esm6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.62.1-1ubuntu0.4+esm7"
          },
          {
            "binary_name": "libsoup-gnome2.4-1",
            "binary_version": "2.62.1-1ubuntu0.4+esm7"
          },
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            "binary_name": "libsoup2.4-1",
            "binary_version": "2.62.1-1ubuntu0.4+esm7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libsoup2.4",
        "purl": "pkg:deb/ubuntu/libsoup2.4@2.62.1-1ubuntu0.4+esm7?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.60.1-1",
        "2.60.2-1",
        "2.60.2-2",
        "2.60.3-1",
        "2.61.90-1",
        "2.62.0-1",
        "2.62.1-1",
        "2.62.1-1ubuntu0.1",
        "2.62.1-1ubuntu0.3",
        "2.62.1-1ubuntu0.4",
        "2.62.1-1ubuntu0.4+esm1",
        "2.62.1-1ubuntu0.4+esm2",
        "2.62.1-1ubuntu0.4+esm3",
        "2.62.1-1ubuntu0.4+esm4",
        "2.62.1-1ubuntu0.4+esm5",
        "2.62.1-1ubuntu0.4+esm6",
        "2.62.1-1ubuntu0.4+esm7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.70.0-1ubuntu0.5+esm2"
          },
          {
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            "binary_version": "2.70.0-1ubuntu0.5+esm2"
          },
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            "binary_name": "libsoup2.4-1",
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            "binary_name": "libsoup2.4-tests",
            "binary_version": "2.70.0-1ubuntu0.5+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libsoup2.4",
        "purl": "pkg:deb/ubuntu/libsoup2.4@2.70.0-1ubuntu0.5+esm2?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.68.2-0ubuntu1",
        "2.68.2-1",
        "2.68.2-2",
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        "2.70.0-1ubuntu0.1",
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        "2.70.0-1ubuntu0.3",
        "2.70.0-1ubuntu0.4",
        "2.70.0-1ubuntu0.5",
        "2.70.0-1ubuntu0.5+esm1",
        "2.70.0-1ubuntu0.5+esm2"
      ]
    },
    {
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          {
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          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libsoup2.4",
        "purl": "pkg:deb/ubuntu/libsoup2.4@2.74.2-3ubuntu0.7?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
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            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
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        "2.74.2-2",
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      ]
    },
    {
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          {
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            "binary_version": "3.0.7-0ubuntu1+esm7"
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            "binary_version": "3.0.7-0ubuntu1+esm7"
          },
          {
            "binary_name": "libsoup-3.0-tests",
            "binary_version": "3.0.7-0ubuntu1+esm7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "libsoup3",
        "purl": "pkg:deb/ubuntu/libsoup3@3.0.7-0ubuntu1+esm7?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.4-2",
        "3.0.4-3",
        "3.0.5-1",
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        "3.0.7-0ubuntu1+esm1",
        "3.0.7-0ubuntu1+esm2",
        "3.0.7-0ubuntu1+esm3",
        "3.0.7-0ubuntu1+esm4",
        "3.0.7-0ubuntu1+esm5",
        "3.0.7-0ubuntu1+esm6",
        "3.0.7-0ubuntu1+esm7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
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          },
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            "binary_version": "2.74.3-6ubuntu1.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libsoup2.4",
        "purl": "pkg:deb/ubuntu/libsoup2.4@2.74.3-6ubuntu1.7?arch=source\u0026distro=noble"
      },
      "ranges": [
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          ],
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      ],
      "versions": [
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          }
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      "package": {
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        "name": "libsoup3",
        "purl": "pkg:deb/ubuntu/libsoup3@3.4.4-5ubuntu0.7?arch=source\u0026distro=noble"
      },
      "ranges": [
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          ],
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      ],
      "versions": [
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        "3.4.4-1",
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        "3.4.4-5build2",
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        "3.4.4-5ubuntu0.3",
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        "3.4.4-5ubuntu0.7"
      ]
    },
    {
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            "binary_name": "gir1.2-soup-3.0",
            "binary_version": "3.6.6-1"
          },
          {
            "binary_name": "libsoup-3.0-0",
            "binary_version": "3.6.6-1"
          },
          {
            "binary_name": "libsoup-3.0-common",
            "binary_version": "3.6.6-1"
          },
          {
            "binary_name": "libsoup-3.0-tests",
            "binary_version": "3.6.6-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libsoup3",
        "purl": "pkg:deb/ubuntu/libsoup3@3.6.6-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.5-4",
        "3.6.5-5",
        "3.6.5-6",
        "3.6.5-7",
        "3.6.5-9",
        "3.6.6-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gir1.2-soup-2.4",
            "binary_version": "2.74.3-10.1ubuntu5+esm1"
          },
          {
            "binary_name": "libsoup-2.4-1",
            "binary_version": "2.74.3-10.1ubuntu5+esm1"
          },
          {
            "binary_name": "libsoup-gnome-2.4-1",
            "binary_version": "2.74.3-10.1ubuntu5+esm1"
          },
          {
            "binary_name": "libsoup2.4-common",
            "binary_version": "2.74.3-10.1ubuntu5+esm1"
          },
          {
            "binary_name": "libsoup2.4-tests",
            "binary_version": "2.74.3-10.1ubuntu5+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "libsoup2.4",
        "purl": "pkg:deb/ubuntu/libsoup2.4@2.74.3-10.1ubuntu5+esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.74.3-10.1ubuntu4",
        "2.74.3-10.1ubuntu5",
        "2.74.3-10.1ubuntu5+esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "A vulnerability was found in libsoup\u0027s WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 \u00a75.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.",
  "id": "UBUNTU-CVE-2026-15711",
  "modified": "2026-07-14T20:16:00Z",
  "published": "2026-07-14T20:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-15711"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-15711"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-15711"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499924"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/515"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-15711"
  ]
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-15711 (GCVE-0-2026-15711)

FKIE_CVE-2026-15711

GHSA-W948-QRW5-CFFC

MSRC_CVE-2026-15711

ubuntu-cve-2026-15711

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature