CVE-2026-49981

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

Published Jul 14, 2026 CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-529h-vh3j-85hq Twig: Sandbox filter, tag and function allow-list bypass when sandbox state changes between renders for a cached `Template`
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Twigphp
Twigphp twig
Vendors & Products Twigphp
Twigphp twig
Type Values Removed Values Added
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.
Title Twig: Sandbox filter, tag and function allow-list bypass when sandbox state changes between renders for a cached `Template`
Weaknesses CWE-693
CWE-863
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 21, 2026, 2:57 PM
Reserved
Jun 2, 2026, 6:30 PM
Status
Analyzed
Published
Jul 14, 2026, 10:17 PM
Modified
Oct 24, 2026, 10:10 PM