CVE WatchOct 1, 2026

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 upd

CVSS

9.1

Critical

EPSS

0.5%

p44

KEV

—

Exploit Today

0-100

Published: Oct 1, 2026 · Last modified: Oct 1, 2026 · CWE-352 · CWE-434 · CWE-918

EPSS · 30d

0.5%EPSS · 30 days0.5%

2026-10-022026-10-25

Technical 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 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.

Official references

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