CSRF in Getsimplecms-Ce
CVE-2026-56660
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 update handler in UpdateCE.php downloads a ZIP archive and extracts its contents into the web root without validating file types or extraction paths. Because PHP files are written into a web-accessible directory, an attacker who can cause a malicious archive to be processed achieves remote code execution as the web-server user. Entry names are also used unsafely, allowing directory traversal (../) to write files outside the intended extraction directory. This issue has been patched in version 1.5.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Getsimplecms-Ce — versions < 1.5
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-56660?
- CVE-2026-56660 is a critical-severity vulnerability in Getsimplecms-Ce, classified under Cross-Site Request Forgery (CSRF). CVSS score: 9.1/10. Published 2026-10-01.
- How severe is CVE-2026-56660?
- Critical severity. CVSS v3 base score is 9.1 out of 10.