CVE-2026-49981

HIGH8.2

Twig: Sandbox filter, tag and function allow-list bypass when sandbox state changes between renders for a cached `Template`

Published Jul 14, 2026

Modified 1 months ago

Details

Twig is a template language for PHP. Prior to 3.27.0, the per-template filter, tag, and function allow-list verdict is computed when a Template instance is constructed and can remain cached after sandbox state changes between renders, allowing a later sandboxed render to reuse a template that was originally checked with a different or empty policy. This issue is fixed in version 3.27.0.

References

WEB

https://github.com/twigphp/Twig/commit/23eb6eb1267cb0d303b91eb5cff9b0c559c538a4

WEB

https://github.com/twigphp/Twig/releases/tag/v3.27.0

WEB

https://github.com/twigphp/Twig/security/advisories/GHSA-529h-vh3j-85hq

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-49981

CVSS Analysis

CVSS v4.0

6.0