GetSimpleCMS-CE GetSimple CMS up to 1.4 Update UpdateCE.php path traversal

Summaryinfo

A vulnerability has been found in GetSimpleCMS-CE GetSimple CMS up to 1.4 and classified as problematic. The impacted element is an unknown function of the file UpdateCE.php of the component Update Handler. The manipulation leads to path traversal. This vulnerability is listed as CVE-2026-56660. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in GetSimpleCMS-CE GetSimple CMS up to 1.4. It has been rated as problematic. This issue affects an unknown part of the file UpdateCE.php of the component Update Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-56660 since 06/22/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

By approaching the search of inurl:UpdateCE.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 1.5 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• GetSimpleCMS-CE

Name

• GetSimple CMS

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4

License

• free

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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