{"id":"CVE-2026-56662","published":"2026-10-01T20:17:26.950","lastModified":"2026-10-06T03:17:06.460","description":"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 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.","cvssScore":9.6,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cwes":["CWE-352"],"vendors":[],"products":[],"references":[{"url":"https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-2rxv-4g4m-573w","tags":[]},{"url":"https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-2rxv-4g4m-573w","tags":[]}],"exploitRefs":[{"url":"https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-2rxv-4g4m-573w","tags":[]},{"url":"https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-2rxv-4g4m-573w","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows a remote attacker to perform a cross-site request forgery (CSRF) attack, leading to remote code execution by exploiting the update form in GetSimple CMS CE versions prior to 1.5.","exploitability":"Exploitation is relatively easy as it requires hosting a malicious page that auto-submits a forged POST request. The attacker must have the ability to host a page that is visited by an authenticated administrator.","blast_radius":"If exploited, this could result in full control over the affected system, including the execution of arbitrary code and potential data loss or compromise.","remediation":"Upgrade to version 1.5 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","csrf","web","cms"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-02T08:46:03.878Z"}}