Detections
Analytics

Ubuntu 25.10 / 26.04 LTS : libxml2 vulnerabilities (USN-8460-1)

high Nessus Plugin ID 322260

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8460-1 advisory.

 It was discovered that libxml2 did not properly release memory allocated in the xmllint utility. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-1757)

 A type confusion vulnerability was found in libxml2 when processing a specially crafted XML document. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-6732)

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.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8460-1

Plugin Details

Severity: High

ID: 322260

File Name: ubuntu_USN-8460-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/23/2026

Updated: 6/23/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-6732

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libxml2-16, p-cpe:/a:canonical:ubuntu_linux:python3-libxml2, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:libxml2-source, p-cpe:/a:canonical:ubuntu_linux:libxml2-dev, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libxml2-utils

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/22/2026

Vulnerability Publication Date: 2/2/2026

Reference Information

CVE: CVE-2026-1757, CVE-2026-6732

USN: 8460-1