Vulnerability-Lookup

oesa-2026-2636

Vulnerability from osv_openeuler

Published

2026-06-12 11:11

Modified

2026-08-06 11:11

Summary

libsolv security update

Details

A free package dependency solver using a satisfiability algorithm. The library is based on two major, but independent, blocks:

Security Fix(es):

A flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA 's' MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature with mismatched MPI lengths. Processing this crafted signature could lead to a denial of service in automated package or repository processing workflows.(CVE-2026-48863)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-48863	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libsolv-0.7.14-10.oe2003sp4.aarch64.rpm",
          "libsolv-debuginfo-0.7.14-10.oe2003sp4.aarch64.rpm",
          "libsolv-debugsource-0.7.14-10.oe2003sp4.aarch64.rpm",
          "libsolv-devel-0.7.14-10.oe2003sp4.aarch64.rpm",
          "perl-solv-0.7.14-10.oe2003sp4.aarch64.rpm",
          "python3-solv-0.7.14-10.oe2003sp4.aarch64.rpm",
          "ruby-solv-0.7.14-10.oe2003sp4.aarch64.rpm"
        ],
        "noarch": [
          "libsolv-help-0.7.14-10.oe2003sp4.noarch.rpm"
        ],
        "src": [
          "libsolv-0.7.14-10.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "libsolv-0.7.14-10.oe2003sp4.x86_64.rpm",
          "libsolv-debuginfo-0.7.14-10.oe2003sp4.x86_64.rpm",
          "libsolv-debugsource-0.7.14-10.oe2003sp4.x86_64.rpm",
          "libsolv-devel-0.7.14-10.oe2003sp4.x86_64.rpm",
          "perl-solv-0.7.14-10.oe2003sp4.x86_64.rpm",
          "python3-solv-0.7.14-10.oe2003sp4.x86_64.rpm",
          "ruby-solv-0.7.14-10.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "libsolv",
        "purl": "pkg:rpm/openEuler/libsolv\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.14-10.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "A free package dependency solver using a satisfiability algorithm. The library is based on two major, but independent, blocks:\r\n\r\nSecurity Fix(es):\n\nA flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA \u0026apos;s\u0026apos; MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature with mismatched MPI lengths. Processing this crafted signature could lead to a denial of service in automated package or repository processing workflows.(CVE-2026-48863)",
  "id": "OESA-2026-2636",
  "modified": "2026-08-06T11:11:34Z",
  "published": "2026-06-12T11:11:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2636"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48863"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libsolv security update",
  "upstream": [
    "CVE-2026-48863"
  ]
}

CVE-2026-48863 (GCVE-0-2026-48863)

Vulnerability from cvelistv5 – Published: 2026-07-16 00:46 – Updated: 2026-09-01 12:04

Title

Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service

Summary

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: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-18 02:38 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

redhat redhat root

References

4 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-48863	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2460975	issue-trackingx_refsource_REDHAT
https://github.com/openSUSE/libsolv/commit/44f8c0…
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

9 products

Vendor	Product	Version
OpenSUSE	libsolv	Affected: 0.6.4 , < 0.7.38 (semver)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
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
Red Hat	Red Hat Hardened Images	cpe:/a:redhat:hummingbird:1
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Red Hat	Red Hat Satellite 6	cpe:/a:redhat:satellite:6
Red Hat	Red Hat Update Infrastructure 4 for Cloud Providers	cpe:/a:redhat:rhui:4::el8

Date Public

2026-05-26 18:53

Credits

This issue was discovered by AISLE Research and AISLE in partnership with Red Hat.

Show details on NVD website

JSON

To clipboard

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.