UBUNTU-CVE-2026-86140

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    UBUNTU-CVE-2026-86140

    Published: 5 Sept 2026Last Modified: 21 Sept 2026
    Upstream:
    CVE-2026-86140
    Aliases:
    USN-8787-1

    Summary:

    Details: In libxml2 before 2.15.4, xmlSnprintfElements in valid.c has a strcat stack-based buffer overflow.

    References: https://ubuntu.com/security/CVE-2026-86140, https://www.cve.org/CVERecord?id=CVE-2026-86140, https://ubuntu.com/security/notices/USN-8787-1

    Affected packages

    Package

    Name: libxml2

    Purl: pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.9.1+dfsg1-3ubuntu4.13+esm12

    Affected versions

    2.9.1+dfsg1-3ubuntu2
    2.9.1+dfsg1-3ubuntu3
    2.9.1+dfsg1-3ubuntu4
    2.9.1+dfsg1-3ubuntu4.1
    2.9.1+dfsg1-3ubuntu4.2
    2.9.1+dfsg1-3ubuntu4.3
    2.9.1+dfsg1-3ubuntu4.4
    2.9.1+dfsg1-3ubuntu4.5
    2.9.1+dfsg1-3ubuntu4.6
    2.9.1+dfsg1-3ubuntu4.7
    2.9.1+dfsg1-3ubuntu4.8
    2.9.1+dfsg1-3ubuntu4.9
    2.9.1+dfsg1-3ubuntu4.10
    2.9.1+dfsg1-3ubuntu4.11
    2.9.1+dfsg1-3ubuntu4.12
    2.9.1+dfsg1-3ubuntu4.13
    2.9.1+dfsg1-3ubuntu4.13+esm1
    2.9.1+dfsg1-3ubuntu4.13+esm2
    2.9.1+dfsg1-3ubuntu4.13+esm3
    2.9.1+dfsg1-3ubuntu4.13+esm4
    2.9.1+dfsg1-3ubuntu4.13+esm5
    2.9.1+dfsg1-3ubuntu4.13+esm6
    2.9.1+dfsg1-3ubuntu4.13+esm7
    2.9.1+dfsg1-3ubuntu4.13+esm8
    2.9.1+dfsg1-3ubuntu4.13+esm9
    2.9.1+dfsg1-3ubuntu4.13+esm10
    2.9.1+dfsg1-3ubuntu4.13+esm11

    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
    UBUNTU-CVE-2026-86140 | CVE-DB