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Ubuntu 26.04 LTS : Twig vulnerability (USN-8408-1)

high Nessus Plugin ID 320406

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8408-1 advisory.

 It was discovered that Twig did not properly validate PHP callables when using a source policy. An authenticated user could possibly use this issue to execute arbitrary code.

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

Note that Nessus has not tested for this issue 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-8408-1

Plugin Details

Severity: High

ID: 320406

File Name: ubuntu_USN-8408-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/11/2026

Updated: 6/11/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-24425

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Temporal Score: 8.6

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.3

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:php-twig-cssinliner-extra, p-cpe:/a:canonical:ubuntu_linux:php-twig-html-extra, p-cpe:/a:canonical:ubuntu_linux:php-twig, p-cpe:/a:canonical:ubuntu_linux:php-twig-intl-extra, p-cpe:/a:canonical:ubuntu_linux:php-twig-inky-extra, p-cpe:/a:canonical:ubuntu_linux:php-twig-markdown-extra, p-cpe:/a:canonical:ubuntu_linux:php-twig-cache-extra, p-cpe:/a:canonical:ubuntu_linux:php-twig-extra-bundle, p-cpe:/a:canonical:ubuntu_linux:php-twig-string-extra, cpe:/o:canonical:ubuntu_linux:26.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2026

Vulnerability Publication Date: 5/20/2026

Reference Information

CVE: CVE-2026-24425

USN: 8408-1