CVE-2026-115935Control panel only API response emulation replaces "securityKey" and reaches server RCE
Beschreibung
The app/process-api-response-headers action accepts fake Craft API response headers from any authenticated control panel user. A non-admin user with only accessCp can place newline characters in X-Craft-Plugin-Licenses. Craft passes this value to its .env writer without removing the newlines. This lets the user insert a new attacker-known CRAFT_SECURITY_KEY into .env. After Craft loads that key, the user can forge a signed login redirect containing a Twig system() callback. This is different from the previous report. That report reads the existing key through a Twig sandbox bypass. This report replaces the key through fake API headers and CRLF injection. Fixing either source does not fix the other.
Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.
Betroffene Produkte und Versionen
Referenzen und Patches
- https://www.hckrt.com/hacktivity/HCKRT-WM3VSE third-party-advisorytechnical-descriptionmitigation
- https://github.com/craftcms/cms/releases/tag/5.11.2 release-notes
- https://github.com/craftcms/cms product
- https://github.com/craftcms/cms/security/advisories/GHSA-9hp6-3565-gvh5 third-party-advisory