{"id":"CVE-2026-53952","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. A logic flaw in GetSimple CMS (v3.4.0a and below) and GetSimpleCMS-CE (v3.3.22 and below) allows unauthenticated attackers to …","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-285","CWE-306","CWE-489"],"vendor":"GetSimpleCMS-CE","product":"GetSimpleCMS-CE","affected":["GetSimpleCMS-CE <= 3.3.22","GetSimpleCMS <= 3.4.0a"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T19:17:26.103","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53952","references":[{"url":"https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-rw2c-w4mg-46g4","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00325,"epssPercentile":0.25741,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-14T17:11:06.020188Z"},"ingestedAt":"2026-09-14T00:35:28.533Z","slug":"CVE-2026-53952","body":"## Overview\n\nGetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. A logic flaw in GetSimple CMS (v3.4.0a and below) and GetSimpleCMS-CE (v3.3.22 and below) allows unauthenticated attackers to create a new administrator account. The application features an automated security control designed to delete the sensitive `admin/setup.php` file post-installation. However, this control is neutralized by a self-exclusion bug within the deletion logic, leaving the setup script accessible for unauthorized account creation even after a legitimate installation is completed. As of time of publication, no known patched versions are available.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}