{"id":"CVE-2026-115935","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-115935","generatedAt":"2026-10-28T03:41:46.737Z","title":"This lets the user insert a new attacker-known CRAFT_SECURITY_KEY into .env.","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.","published":"2026-10-23T22:16:59.000Z","lastModified":"2026-10-26T18:39:43.000Z","status":"Awaiting Analysis","sourceIdentifier":"7004884b-51e2-48e8-b4a2-5ca29e80453e","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-94"],"affected":[],"epss":{"score":0.00369,"percentile":0.30618,"date":"2026-10-27","history":[{"date":"2026-10-24","score":0.00682,"percentile":0.51969}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-23T22:16:59.000Z","detail":{"score":"8.7","severity":"HIGH","publishedAt":"2026-10-23T22:16:59.290Z"},"summary":"New CVE, high severity (CVSS 8.7)."}],"references":[{"url":"https://github.com/craftcms/cms","source":"7004884b-51e2-48e8-b4a2-5ca29e80453e"},{"url":"https://github.com/craftcms/cms/releases/tag/5.11.2","source":"7004884b-51e2-48e8-b4a2-5ca29e80453e"},{"url":"https://github.com/craftcms/cms/security/advisories/GHSA-9hp6-3565-gvh5","source":"7004884b-51e2-48e8-b4a2-5ca29e80453e"},{"url":"https://www.hckrt.com/hacktivity/HCKRT-WM3VSE","source":"7004884b-51e2-48e8-b4a2-5ca29e80453e"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-115935","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}