CVE-2026-46629

MEDIUM6.5

Twig: Unbounded formatter memoisation in twig/intl-extra keyed on template-controlled arguments

Published Jul 14, 2026

Modified 1 weeks ago

Details

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.

References

WEB

https://github.com/twigphp/Twig/commit/6add9066fc5c0455eb764c1f3af6e4e4e3562419

WEB

https://github.com/twigphp/Twig/releases/tag/v3.26.0

WEB

https://github.com/twigphp/Twig/security/advisories/GHSA-35wc-cvqg-78fp

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-46629

CVSS Analysis

CVSS v4.0

5.3