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 fetches a user-supplied URL with file_get_contents() after only format validation (FILTER_VALIDATE_URL) — there is no validation of the request destination. An attacker who can submit the form can make the server issue requests to arbitrary destinations, including internal-only services and cloud metadata endpoints (169.254.169.254). The fetched response body is written to a web-accessible file (/Tmpfile.zip) and is not deleted when the content is not a valid ZIP, turning this into a full-read SSRF: the attacker can retrieve the response of the internal request directly. This issue has been patched in version 1.5.

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History

Fri, 02 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Getsimple-ce
Getsimple-ce getsimple Cms
Vendors & Products Getsimple-ce
Getsimple-ce getsimple Cms

Thu, 01 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 01 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
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 fetches a user-supplied URL with file_get_contents() after only format validation (FILTER_VALIDATE_URL) — there is no validation of the request destination. An attacker who can submit the form can make the server issue requests to arbitrary destinations, including internal-only services and cloud metadata endpoints (169.254.169.254). The fetched response body is written to a web-accessible file (/Tmpfile.zip) and is not deleted when the content is not a valid ZIP, turning this into a full-read SSRF: the attacker can retrieve the response of the internal request directly. This issue has been patched in version 1.5.
Title GetSimple CMS: Server-Side Request Forgery in the UpdateCE update endpoint
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-01T19:50:54.335Z

Reserved: 2026-06-22T16:39:01.043Z

Link: CVE-2026-56661

cve-icon Vulnrichment

Updated: 2026-10-01T19:50:50.630Z

cve-icon NVD

Status : Deferred

Published: 2026-10-01T20:17:26.793

Modified: 2026-10-01T20:23:46.493

Link: CVE-2026-56661

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-02T14:30:23Z

Weaknesses