DEBIAN-CVE-2026-74860

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    DEBIAN-CVE-2026-74860

    Published: 8 Sept 2026Last Modified: 11 Sept 2026
    Upstream:
    CVE-2026-74860

    Summary:

    Details: A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.

    References: https://security-tracker.debian.org/tracker/CVE-2026-74860

    Affected packages

    Package

    Name: libxml2

    Purl: pkg:deb/debian/libxml2?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.12.3+dfsg-0exp1
    2.12.5+dfsg-0exp1
    2.12.6+dfsg-0exp1
    2.12.6+dfsg-0exp2
    2.12.7+dfsg+really2.9.14-0.1
    2.12.7+dfsg+really2.9.14-0.2
    2.12.7+dfsg+really2.9.14-0.3
    2.12.7+dfsg+really2.9.14-0.4
    2.12.7+dfsg+really2.9.14-1
    2.12.7+dfsg+really2.9.14-2
    2.12.7+dfsg+really2.9.14-2.1
    2.12.7+dfsg-1
    2.12.7+dfsg-2
    2.12.7+dfsg-3

    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
    DEBIAN-CVE-2026-74860 | CVE-DB