{"id":"CVE-2026-56662","title":"GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS","summary":"GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. Prior to version 1.5, the UpdateCE update form contained no anti-CSRF token, and the POST handler performed no token or reques…","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cwe":["CWE-352"],"vendor":"GetSimpleCMS-CE","product":"GetSimpleCMS-CE","affected":["GetSimpleCMS-CE < 1.5"],"published":"2026-10-01","updated":"2026-10-06","sourceUpdated":"2026-10-06T03:17:06.460","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56662","references":[{"url":"https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-2rxv-4g4m-573w","label":"security-advisories@github.com"},{"url":"https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-2rxv-4g4m-573w","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-10-06T02:07:05.762724Z"},"epss":0.00249,"epssPercentile":0.16118,"ingestedAt":"2026-10-01T19:58:57.566Z","slug":"CVE-2026-56662","body":"## Overview\n\nGetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. Prior to version 1.5, the UpdateCE update form contained no anti-CSRF token, and the POST handler performed no token or request-origin verification. A remote attacker can host a page that auto-submits a forged POST to the update endpoint; when an authenticated administrator visits it, the server performs an attacker-directed download-and-deploy operation in the administrator's session — with no further interaction. Because the deployed content is executed (see the related ZIP-extraction advisory), this yields remote code execution. The url field is additionally written into the form unescaped, providing a secondary HTML-injection sink via a malicious upgrade.json. This issue has been patched in version 1.5.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":65,"depthScoreParts":{"impact":52.8,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":216165,"id":"CVE-2026-56662","ts":1791265674485,"field":"exploit_available","old":"false","new":"true"}]}