CVE-2026-46629

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

Published Jul 14, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6311-1 php-twig security update
Debian DSA Debian DSA DSA-6320-1 php-twig security update
Github GHSA Github GHSA GHSA-35wc-cvqg-78fp twig/intl-extra: Unbounded formatter memoisation in keyed on template-controlled arguments
History
Type Values Removed Values Added
First Time appeared Twigphp
Twigphp twig
Vendors & Products Twigphp
Twigphp twig
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
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.
Title Twig: Unbounded formatter memoisation in twig/intl-extra keyed on template-controlled arguments
Weaknesses CWE-770
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 15, 2026, 12:53 PM
Reserved
May 15, 2026, 7:34 PM
Status
Analyzed
Published
Jul 14, 2026, 10:16 PM
Modified
Oct 24, 2026, 10:10 PM