{"affected":[{"defaultStatus":"unaffected","product":"Vvveb","source":"CNA: VulnCheck","vendor":"givanz","versions":[{"lessThan":"1.0.9.0","status":"affected","version":"0","versionType":"custom"},{"status":"unaffected","version":"1.0.9.0","versionType":"custom"}]}],"cveId":"CVE-2026-126377","cwes":["CWE-287"],"description":"Vvveb before 1.0.9.0 contains an authentication bypass vulnerability in generateCookie() in system/user/user.php that uses loose comparison to validate MD5 cookie hashes. Unauthenticated attackers can brute-force cookie values until the server's MD5 computation yields a 0e magic hash, then forge persistent cookies for account takeover.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":9.2,"severity":"critical","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":8.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},{"score":9.2,"severity":"critical","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":8.1,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794565060380,"publishedAt":1794562563862,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/givanz/Vvveb/security/advisories/GHSA-p8w8-2rq6-wm2g"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/vvveb-before-1.0.9.0-cookie-forgery-via-php-type-juggling-in-generatecookie"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/givanz/Vvveb/security/advisories/GHSA-p8w8-2rq6-wm2g"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/vvveb-before-1.0.9.0-cookie-forgery-via-php-type-juggling-in-generatecookie"}],"remediation":[],"revision":"32b3bd9886017f4b6cf07486d76a5ccabdd038e621ddf2b3844fdbe0c6830808","sources":[{"modifiedAt":1794562563862,"name":"CNA: VulnCheck","retrievedAt":1794564620360,"url":"https://www.cve.org/CVERecord?id=CVE-2026-126377"},{"modifiedAt":1794565060380,"name":"NVD","retrievedAt":1794572191784,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126377"}],"ssvc":null,"status":"published","title":"Vvveb before 1.0.9.0 Cookie Forgery via PHP Type Juggling in generateCookie()","updatedAt":1794572191784}