{"id":"CVE-2026-6257","revision":"fbb086fbab8a4c4bacbf49dec1891431","records":[{"revision":"fbb086fbab8a4c4bacbf49dec1891431","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-6257","aliases":[],"title":"Vvveb CMS < v1.0.8.2 Remote Code Execution via Media Management","description":"Vvveb CMS v1.0.8.2 contains a remote code execution vulnerability in its media management functionality where a missing return statement in the file rename handler allows authenticated attackers to rename files to blocked extensions .php or .htaccess. Attackers can exploit this logic flaw by first uploading a text file and renaming it to .htaccess to inject Apache directives that register PHP-executable MIME types, then uploading another file and renaming it to .php to execute arbitrary operating system commands as the www-data user.","state":0,"publishedAt":"2026-04-20T19:09:45.927+00:00","modifiedAt":"2026-07-14T22:03:48.955+00:00","affected":[{"ecosystem":"Vendor product","name":"Vvveb CMS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Vvveb\",\n                    \"product\": \"Vvveb CMS\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"1.0.8.2\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:H/SA:N","score":9.2,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","score":9.1,"severity":"CRITICAL"}],"references":["https://github.com/givanz/Vvveb/commit/6fb8eaa998265e33e8802cbc220d8859dbc144f2","https://www.vulncheck.com/advisories/vvveb-cms-remote-code-execution-via-media-management"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-6257","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-6257","identifiers":["CVE-2026-6257"]},"retained":false,"historicalAffected":[]}],"coverage":[]}