CVE-2026-56660
GetSimple CMS: CSRF, SSRF, and Unrestricted Zip Extraction
- Published
- Last modified
- Status
- published
- Known exploitation
- Not listed in CISA KEV
- Fix
- Fixed in 1.5
- Public exploit
- None on Exploit-DB
CISA SSVC
- Exploitation: poc
- Automatable: no
- Technical impact: total
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Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).
SSVC documentationSummary
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.
Affected versions
- GetSimpleCMS-CE GetSimpleCMS-CE
fixed in 1.5