{"id":"CVE-2026-88418","title":"CMSimple 5.24 ships with CSRF protection disabled by default, which turns csrfProtection() into a no-op on every state-changing admin request, and it does not send the csrf_token hidden field in admin forms","summary":"CMSimple 5.24 ships with CSRF protection disabled by default, which turns csrfProtection() into a no-op on every state-changing admin request, and it does not send the csrf_token hidden field in admin forms. Because administrator authent…","severity":"none","published":"2026-09-22","updated":"2026-09-22","sourceUpdated":"2026-09-22T20:17:10.960","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88418","references":[{"url":"https://github.com/15536818056/CVE/issues/5","label":"cve@mitre.org"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-22T20:10:15.101Z","epss":0.00328,"epssPercentile":0.26198,"slug":"CVE-2026-88418","body":"## Overview\n\nCMSimple 5.24 ships with CSRF protection disabled by default, which turns csrfProtection() into a no-op on every state-changing admin request, and it does not send the csrf_token hidden field in admin forms. Because administrator authentication is cookie-only and no CSRF token is enforced, an unauthenticated attacker can induce a logged-in administrator's browser to issue a forged content-save request with a text payload containing a scripting marker. The marker is stored verbatim into content/content.php; on every subsequent page view evaluate_cmsimple_scripting() (functions.php) executes the marker body with PHP eval() — for all visitors, including unauthenticated ones. This yields persistent remote code execution on the web server.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}