{"id":"CVE-2026-56661","revision":"82e347712dfb44de8f953f2e25edc941","records":[{"revision":"82e347712dfb44de8f953f2e25edc941","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-56661","aliases":[],"title":"GetSimple CMS: Server-Side Request Forgery in the UpdateCE update endpoint","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.","state":0,"publishedAt":"2026-10-01T19:38:08.498+00:00","modifiedAt":"2026-10-01T19:50:54.335+00:00","affected":[{"ecosystem":"Vendor product","name":"GetSimpleCMS-CE","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"GetSimpleCMS-CE\",\n                    \"product\": \"GetSimpleCMS-CE\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L","score":7.5,"severity":"HIGH"}],"references":["https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-r7v8-mx29-5q8h"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56661","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-56661","identifiers":["CVE-2026-56661"]},"retained":false,"historicalAffected":[]}],"coverage":[]}