CVE-2026-56660

9.1 CRITICALpublic exploit available

Published 2026-10-01 · Updated 2026-10-01

AI risk analysis

Summary: The flaw allows an attacker to execute arbitrary code by processing a malicious ZIP archive, leading to remote code execution (RCE) as the web-server user.
Exploitability: Exploitation is relatively easy if an attacker can cause a malicious archive to be processed, such as through a vulnerable plugin or user input.
Blast radius: If exploited, the impact could be severe, as it allows full control over the web application and potentially the underlying server.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to GetSimple CMS version 1.5 or later.

rcewebcmszipexploit

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Weaknesses

CWE-352, CWE-434, CWE-918

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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