Twig is a template language for PHP. From 3.15.0 until 3.26.0, _self.(<string>) and import-alias dynamic attribute syntax can concatenate an attacker-controlled string into a MacroReferenceExpression name without identifier validation, causing raw PHP to be emitted into the generated template source and executed at template-load time. This issue is fixed in version 3.26.0.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6311 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6311-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     May 29, 2026                          https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : php-twig     CVE ID         : CVE-2026-24425 CVE-2026-46627 CVE-2026-46628 CVE-2026-46629                      CVE-2026-46633 CVE-2026-46634 CVE-2026-46635 CVE-2026-46636                      CVE-2026-46637 CVE-2026-46638 CVE-2026-46640 CVE-2026-47730                      CVE-2026-47732 CVE-2026-48805

    Multiple security vulnerabilities were discovered in Twig, a template     engine for PHP, which could result in PHP code injection, sandbox bypass     or cross-site scripting.

    For the stable distribution (trixie), these problems have been fixed in     version 3.27.0-0+deb13u1.

    We recommend that you upgrade your php-twig packages.

    For the detailed security status of php-twig please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/php-twig

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

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

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Twig is a template language for PHP. From 3.15.0 until 3.26.0, _self.(<string>) and import-alias dynamic
    attribute syntax can concatenate an attacker-controlled string into a MacroReferenceExpression name
    without identifier validation, causing raw PHP to be emitted into the generated template source and
    executed at template-load time. This issue is fixed in version 3.26.0. (CVE-2026-46640)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Twig is a template language for PHP. From 3.15.0 until 3.26.0, _self.(<string>) and import-alias dynamic     attribute syntax can concatenate an attacker-controlled string into a MacroReferenceExpression name     without identifier validation, causing raw PHP to be emitted into the generated template source and     executed at template-load time. This issue is fixed in version 3.26.0. (CVE-2026-46640)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
318004	Debian dsa-6311 : php-twig - security update	Nessus	Debian Local Security Checks	critical
442294	SCA: security update for twig/twig (GHSA-45vw-wh46-2vx8)	Tenable Cloud Security	SCA Checks	high
442294	SCA: security update for twig/twig (GHSA-45vw-wh46-2vx8)	Tenable Self-Hosted Container Security	SCA Checks	high
316064	Linux Distros Unpatched Vulnerability : CVE-2026-46640	Nessus	Misc.	high

Detections

Analytics

CVE-2026-46640

high

Tenable Plugins

critical

high

high

high