{"schema":"threatline.record/2","record":{"id":"CVE-2026-115935","aliases":["GHSA-9hp6-3565-gvh5"],"summary":"Control panel only API response emulation replaces \"securityKey\" and reaches server RCE","details":"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.","categories":["Unclassified"],"product":"cms","vendor":"craftcms","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-115935","source_modified_at":"2026-10-23T21:40:57.592Z","fetched_at":"2026-10-23T21:47:51.402276Z","product":"cms","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"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-115935","source_modified_at":"2026-10-23T21:40:57.592Z","fetched_at":"2026-10-23T21:47:51.402276Z","package":{"name":"cms","ecosystem":null},"version":"5.11.2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-115935","source_modified_at":"2026-10-23T21:40:57.592Z","fetched_at":"2026-10-23T21:47:51.402276Z","package":{"name":"cms","ecosystem":null},"version":"4.18.9","basis":"first unaffected version stated in the CVE record"}],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00682,"percentile":0.51969,"score_date":"2026-10-24"},"published_at":"2026-10-23T21:40:57.592Z","modified_at":"2026-10-23T21:40:57.592Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-115935","fetched_at":"2026-10-23T21:47:51.402276Z","source_modified_at":"2026-10-23T21:40:57.592Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115935","fetched_at":"2026-10-24T18:03:20.872036Z","source_modified_at":"2026-10-24"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.hckrt.com/hacktivity/HCKRT-WM3VSE","tags":["third-party-advisory","technical-description","mitigation"]},{"source":"CVE List","url":"https://github.com/craftcms/cms/releases/tag/5.11.2","tags":["release-notes"]},{"source":"CVE List","url":"https://github.com/craftcms/cms","tags":["product"]},{"source":"CVE List","url":"https://github.com/craftcms/cms/security/advisories/GHSA-9hp6-3565-gvh5","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-23T21:40:57.592Z","content_hash":"d802c62488f55cf8a133afd09bd2ae60f10087cf549c1effd09296e9c25130b5"}}