{"cve":"CVE-2026-41267","nvd":{"published":"2026-04-23T20:16:15.160","modified":"2026-10-26T21:10:00.170","status":"Analyzed","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-639","CWE-915"],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj","https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj"],"products":["flowiseai:flowise"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-41267","score":0.00334,"percentile":0.2652,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-48m6-ch88-55mj","url":"https://osv.dev/vulnerability/GHSA-48m6-ch88-55mj","summary":"Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association","modified":"2026-05-05T16:11:36.509378Z","packages":[{"ecosystem":"npm","name":"flowise","purl":"pkg:npm/flowise","ranges":["<3.1.0"],"fixed":["3.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}