The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7974-1 advisory.

    It was discovered that libxml2 incorrectly handled maliciously crafted SGML catalog files. An attacker     could possibly use this issue to cause libxml2 to consume excessive resources, leading to a denial of     service. (CVE-2025-8732)

    It was discovered that libxml2 incorrectly handled recursive include directories with the RelaxNG parser.
    An attacker could possibly use this issue to cause libxml2 to consume excessive resources, leading to a     denial of service. (CVE-2026-0989)

    Nick Wellnhofer discovered that libxml2 incorrectly parsed catalogs with self-referencing URI delegates.
    An attacker could possibly use this issue to cause libxml2 to consume excessive resources, leading to a     denial of service. (CVE-2026-0990)

    Nick Wellnhofer discovered that libxml2 inefficiently parsed catalogs linked with repeating nextCatalog     elements. An attacker could possibly use this issue to cause libxml2 to use excessive resources, leading     to a denial of service. (CVE-2026-0992)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : libxml2 vulnerabilities (USN-7974-1)

medium Nessus Plugin ID 296249

Version 1.2