UBUNTU-CVE-2026-46637
Twig, a PHP template language, has a vulnerability in versions prior to 3.26.0 where certain filters in twig/markdown-extra and twig/cssinliner-extra are marked as safe for all contexts. This causes Twig to treat plain text or HTML output as safe in contexts like HTML, JavaScript, CSS, and URL without proper escaping. The issue is fixed in version 3.26.0.
AI Analysis
Technical Summary
The vulnerability in php-twig affects versions prior to 3.26.0, where several filters in the twig/markdown-extra and twig/cssinliner-extra extensions are registered with is_safe => [all]. This causes Twig to incorrectly treat output as safe across multiple contexts (HTML, JavaScript, CSS, URL), potentially leading to improper escaping of output. This issue has been resolved in version 3.26.0.
Potential Impact
The vulnerability may lead to unsafe output handling in multiple contexts, potentially causing security issues related to improper escaping of content in HTML, JavaScript, CSS, and URL contexts. However, no known exploits are reported in the wild for this issue.
Mitigation Recommendations
Upgrade to Twig version 3.26.0 or later where this issue is fixed. No other mitigations are indicated by the vendor advisory.
UBUNTU-CVE-2026-46637
Description
Twig, a PHP template language, has a vulnerability in versions prior to 3.26.0 where certain filters in twig/markdown-extra and twig/cssinliner-extra are marked as safe for all contexts. This causes Twig to treat plain text or HTML output as safe in contexts like HTML, JavaScript, CSS, and URL without proper escaping. 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 affects versions prior to 3.26.0, where several filters in the twig/markdown-extra and twig/cssinliner-extra extensions are registered with is_safe => [all]. This causes Twig to incorrectly treat output as safe across multiple contexts (HTML, JavaScript, CSS, URL), potentially leading to improper escaping of output. This issue has been resolved in version 3.26.0.
Potential Impact
The vulnerability may lead to unsafe output handling in multiple contexts, potentially causing security issues related to improper escaping of content in HTML, JavaScript, CSS, and URL contexts. However, no known exploits are reported in the wild for this issue.
Mitigation Recommendations
Upgrade to Twig version 3.26.0 or later where this issue is fixed. No other mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-46637
- 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: 6a58b4a068715ace43da8d3f
Added to database: 07/16/2026, 10:38:24 UTC
Last enriched: 07/16/2026, 12:30:11 UTC
Last updated: 07/16/2026, 12:30:11 UTC
Views: 2
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