CVE-2026-56662

9.6 CRITICALpublic exploit available

Published 2026-10-01 · Updated 2026-10-06

AI risk analysis

Summary: The flaw allows a remote attacker to perform a cross-site request forgery (CSRF) attack, leading to remote code execution by exploiting the update form in GetSimple CMS CE versions prior to 1.5.
Exploitability: Exploitation is relatively easy as it requires hosting a malicious page that auto-submits a forged POST request. The attacker must have the ability to host a page that is visited by an authenticated administrator.
Blast radius: If exploited, this could result in full control over the affected system, including the execution of arbitrary code and potential data loss or compromise.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to version 1.5 or later.

rcecsrfwebcms

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 UpdateCE update form contained no anti-CSRF token, and the POST handler performed no token or request-origin verification. A remote attacker can host a page that auto-submits a forged POST to the update endpoint; when an authenticated administrator visits it, the server performs an attacker-directed download-and-deploy operation in the administrator's session — with no further interaction. Because the deployed content is executed (see the related ZIP-extraction advisory), this yields remote code execution. The url field is additionally written into the form unescaped, providing a secondary HTML-injection sink via a malicious upgrade.json. This issue has been patched in version 1.5.

CVSS vector

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

Weaknesses

CWE-352

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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