Medium severity · published Jul 14, 2026
CVE-2026-46629
Twig: Unbounded formatter memoisation in twig/intl-extra keyed on template-controlled arguments
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
Twig is a template language for PHP. Prior to 3.26.0, twig/intl-extra memoises IntlDateFormatter and NumberFormatter instances in arrays keyed by template-controlled filter arguments such as locale, pattern, and attrs, allowing a template to allocate many ICU formatter objects that remain pinned for the lifetime of the Twig\Environment. This issue is fixed in version 3.26.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TW
Twig · twigphp
< 3.26.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46629
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46629
Patch
https://github.com/twigphp/Twig/commit/6add9066fc5c0455eb764c1f3af6e4e4e3562419
Release Notes
https://github.com/twigphp/Twig/releases/tag/v3.26.0
Vendor Advisory
https://github.com/twigphp/Twig/security/advisories/GHSA-35wc-cvqg-78fp
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