{"id":"CVE-2026-56276","title":"Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override","summary":"Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to directly modify the credential field without validation. Attackers can bypass password change verification …","severity":"medium","cvss":6,"cvssVector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-915"],"vendor":"Flowise","product":"Flowise","affected":["Flowise < 3.1.2"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-22T13:49:32.938401Z"},"exploitAvailable":true,"published":"2026-06-20","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:05:53.186Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56276","references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-59fh-9f3p-7m39","label":"GitHub Security Advisory (GHSA-59fh-9f3p-7m39)"},{"url":"https://www.vulncheck.com/advisories/flowise-mass-assignment-in-put-api-v1-user-allows-password-hash-override","label":"VulnCheck Advisory: Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override"}],"tags":["cve.org","exploit-available"],"epss":0.00366,"epssPercentile":0.30666,"ingestedAt":"2026-11-08T14:51:22.360Z","slug":"CVE-2026-56276","body":"## Overview\n\nFlowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to directly modify the credential field without validation. Attackers can bypass password change verification and session invalidation by supplying a crafted password hash, establishing persistent account access after temporary session compromise.\n\n## Affected\n\n- `Flowise < 3.1.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":33,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}