High severity · published Jul 14, 2026
CVE-2026-49981
Twig: Sandbox filter, tag and function allow-list bypass when sandbox state changes between renders for a cached `Template`
8.2
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TW
Twig · twigphp
< 3.27.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49981
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-49981
Patch
https://github.com/twigphp/Twig/commit/23eb6eb1267cb0d303b91eb5cff9b0c559c538a4
Release Notes
https://github.com/twigphp/Twig/releases/tag/v3.27.0
Vendor Advisory
https://github.com/twigphp/Twig/security/advisories/GHSA-529h-vh3j-85hq
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