CVE-2026-41591

Description

Marko is a declarative, HTML-based language for building web apps. Prior to marko version 5.38.36 and prior to @marko/runtime-tags 6.0.164, when dynamic text is interpolated into a <script> or <style> tag the Marko runtime failed to prevent tag breakout when the closing tag used non-lowercase casing. An attacker able to place input inside a <script> or <style> block could break out of the tag with </SCRIPT>, </Style>, etc. and inject arbitrary HTML/JavaScript, resulting in cross-site scripting. This issue has been patched in marko version 5.38.36 and @marko/runtime-tags 6.0.164.

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Produits concernés

• marko-js marko
• Openjsf marko
• Openjsf marko\/runtime-tags

Scores CVSS

Faiblesses (CWE)

• CWE-79

Références

• https://github.com/marko-js/marko/security/advisories/GHSA-x9fj-57fh-c8wq ExploitMitigationPatchVendor Advisory
• https://github.com/marko-js/marko/security/advisories/GHSA-x9fj-57fh-c8wq ExploitMitigationPatchVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories