CVE-2026-86138

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    CVE-2026-86138

    Published: 5 Sept 2026Last Modified: 25 Sept 2026

    Summary:

    Details: In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.

    References: https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86138.json, https://nvd.nist.gov/vuln/detail/CVE-2026-86138, https://github.com/GNOME/libxml2/commit/a4cba4b5b5a8c42e155ed42d2d2a44955465a2e4

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -96498992efa48d52b0e8b83058bd88dbdaf153c1

    Affected versions

    v2.15.3
    v2.15.2
    v2.15.1
    v2.15.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-86138 | CVE-DB