UBUNTU-CVE-2026-46629
Twig, a PHP template language, prior to version 3.26.0, memoizes IntlDateFormatter and NumberFormatter instances keyed by template-controlled filter arguments. This allows a template to allocate many ICU formatter objects that remain in memory for the lifetime of the Twig\Environment. The issue is fixed in version 3.26.0.
AI Analysis
Technical Summary
The vulnerability in php-twig versions prior to 3.26.0 involves memoization of ICU formatter objects (IntlDateFormatter and NumberFormatter) in arrays keyed by template-controlled arguments such as locale, pattern, and attributes. This behavior allows a template to cause many ICU formatter objects to be allocated and remain pinned in memory for the lifetime of the Twig environment, potentially leading to resource exhaustion. The issue is resolved in version 3.26.0.
Potential Impact
The vulnerability can lead to increased memory usage due to many ICU formatter objects being pinned in memory, which may degrade application performance or availability. There is no indication of code execution or data disclosure. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade to php-twig version 3.26.0 or later where this issue is fixed. No other mitigation or temporary workaround is indicated.
UBUNTU-CVE-2026-46629
Description
Twig, a PHP template language, prior to version 3.26.0, memoizes IntlDateFormatter and NumberFormatter instances keyed by template-controlled filter arguments. This allows a template to allocate many ICU formatter objects that remain in memory for the lifetime of the Twig\Environment. The issue is fixed in version 3.26.0.
CVSS v4.0
Affected software
pkg:deb/ubuntu/[email protected]~esm2?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/[email protected]+esm1?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=questingpkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in php-twig versions prior to 3.26.0 involves memoization of ICU formatter objects (IntlDateFormatter and NumberFormatter) in arrays keyed by template-controlled arguments such as locale, pattern, and attributes. This behavior allows a template to cause many ICU formatter objects to be allocated and remain pinned in memory for the lifetime of the Twig environment, potentially leading to resource exhaustion. The issue is resolved in version 3.26.0.
Potential Impact
The vulnerability can lead to increased memory usage due to many ICU formatter objects being pinned in memory, which may degrade application performance or availability. There is no indication of code execution or data disclosure. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade to php-twig version 3.26.0 or later where this issue is fixed. No other mitigation or temporary workaround is indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-46629
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:Pro:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 4.0
Threat ID: 6a58b4a068715ace43da8d53
Added to database: 07/16/2026, 10:38:24 UTC
Last enriched: 07/16/2026, 12:30:56 UTC
Last updated: 07/16/2026, 12:30:56 UTC
Views: 2
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