{"id":"CVE-2026-56276","aliases":["GHSA-59fh-9f3p-7m39"],"url":"https://o3.security/vulnerability/CVE-2026-56276","summary":"Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override","details":"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 and session invalidation by supplying a crafted password hash, establishing persistent account access after temporary session compromise.","published":"2026-06-20T15:24:44.035Z","modified":"2026-08-12T03:51:27.279782664Z","cvss":null,"epss":{"score":0.00366,"percentile":0.29507,"asOf":"2026-08-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"flowise","fixedVersion":"3.1.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56276.json"},{"type":"ADVISORY","url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-59fh-9f3p-7m39"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56276"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/flowise-mass-assignment-in-put-api-v1-user-allows-password-hash-override"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:27.279782664Z"}}