{"affected":[{"defaultStatus":"unaffected","ecosystem":"https://packagist.org","packageName":"craftcms/cms","product":"cms","source":"CNA: Hackrate","vendor":"craftcms","versions":[{"lessThan":"5.11.2","status":"affected","version":"5.0.0","versionType":"semver"},{"lessThan":"4.18.9","status":"affected","version":"4.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-115935","cwes":["CWE-94"],"description":"The app/process-api-response-headers action accepts fake Craft API response headers from any authenticated control panel user.\n\n\n\nA 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.\n\n\n\nThis 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.\n\n\n\nThis 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.","epss":{"date":"2026-11-02","percentile":0.30797,"score":0.00369},"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: Hackrate","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":8.8,"severity":"high","source":"CNA: Hackrate","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793630741313,"publishedAt":1792791657592,"references":[{"source":"CNA: Hackrate","tags":["third-party-advisory","technical-description","mitigation"],"url":"https://www.hckrt.com/hacktivity/HCKRT-WM3VSE"},{"source":"CNA: Hackrate","tags":["release-notes"],"url":"https://github.com/craftcms/cms/releases/tag/5.11.2"},{"source":"CNA: Hackrate","tags":["product"],"url":"https://github.com/craftcms/cms"},{"source":"CNA: Hackrate","tags":["third-party-advisory"],"url":"https://github.com/craftcms/cms/security/advisories/GHSA-9hp6-3565-gvh5"}],"remediation":[],"revision":"840fa5d448f5c1c6d2681d79ba46785265ce1b04e82582389a0f69d57bb59fb9","sources":[{"modifiedAt":1793630741313,"name":"CNA: Hackrate","retrievedAt":1793632104927,"url":"https://www.cve.org/CVERecord?id=CVE-2026-115935"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793632107265,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115935"}],"ssvc":{"assessedAt":1793630637583,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Control panel only API response emulation replaces \"securityKey\" and reaches server RCE","updatedAt":1793632107265}