Medium severity5.4OSV Advisory· Published Jul 14, 2026· Updated Jul 16, 2026
CVE-2026-46637
CVE-2026-46637
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
twig/markdown-extraPackagist | < 3.26.0 | 3.26.0 |
twig/cssinliner-extraPackagist | < 3.26.0 | 3.26.0 |
Affected products
2Patches
Vulnerability mechanics
References
8- github.com/twigphp/Twig/commit/84982072c79a7417b0d158a401d91344f3658299nvdPatch
- github.com/twigphp/Twig/commit/e36489d3521ecbfc08bdcc61294302557035f14anvdPatch
- github.com/advisories/GHSA-jv8m-2544-3pg3ghsaADVISORY
- github.com/twigphp/Twig/security/advisories/GHSA-jv8m-2544-3pg3nvdVendor AdvisoryWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/twig/cssinliner-extra/CVE-2026-46637.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/twig/markdown-extra/CVE-2026-46637.yamlghsaWEB
- github.com/twigphp/Twig/releases/tag/v3.26.0nvdRelease Notes
- symfony.com/cve-2026-46637ghsaWEB
News mentions
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