Twig is a template language for PHP. Prior to 3.26.0, several filters in twig/markdown-extra and twig/cssinliner-extra are registered with is_safe => [all], causing Twig to treat plain text or HTML output as safe in HTML, JavaScript, CSS, URL, and other contexts where the output is not properly escaped. This issue is fixed in version 3.26.0.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00175.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
twigphp Twig affected
Version Status Constraints
< 3.26.0 affected —
twig cssinliner-extra affected
Version Status Constraints
< 3.26.0 affected —
twig markdown-extra affected
Version Status Constraints
< 3.26.0 affected —

No data.

No data.

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No data.

Project Subscriptions

No data.

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-jv8m-2544-3pg3 Twig: HTML-output filters in twig/* extras incorrectly declared `is_safe => ['all']`
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/twigphp/Twig/commit/84982072c79a7417b0d158a401d91344f3658299 cve-icon
https://github.com/twigphp/Twig/commit/e36489d3521ecbfc08bdcc61294302557035f14a cve-icon
https://github.com/twigphp/Twig/releases/tag/v3.26.0 cve-icon
https://github.com/twigphp/Twig/security/advisories/GHSA-jv8m-2544-3pg3 cve-icon
History

Thu, 16 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Tue, 14 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
Description Twig is a template language for PHP. Prior to 3.26.0, several filters in twig/markdown-extra and twig/cssinliner-extra are registered with is_safe => [all], causing Twig to treat plain text or HTML output as safe in HTML, JavaScript, CSS, URL, and other contexts where the output is not properly escaped. This issue is fixed in version 3.26.0.
Title Twig: HTML-output filters in twig/* extras incorrectly declared `is_safe => ['all']`
Weaknesses CWE-116
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-16T15:05:57.087Z

Reserved: 2026-05-15T20:11:54.584Z

Link: CVE-2026-46637

cve-icon Vulnrichment

Updated: 2026-07-16T15:05:52.849Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-22T21:45:12Z

Weaknesses