CVE-2026-49981

HIGH

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

Title source: cna
STIX 2.1

Description

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 (3)

Core 3

Scores

CVSS v3 8.2
EPSS 0.0021
EPSS Percentile 11.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-693 CWE-863
Status published
Products (2)
symfony/twig < 3.27.0
twigphp/Twig < 3.27.0
Published Jul 14, 2026
Tracked Since Jul 15, 2026