{"id":"CVE-2026-55255","revision":"3bdf060d69b945ceaab9d023b00c864e","records":[{"revision":"3bdf060d69b945ceaab9d023b00c864e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-55255","aliases":[],"title":"Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow","description":"Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.1.","state":0,"publishedAt":"2026-06-23T16:28:20.985+00:00","modifiedAt":"2026-10-07T18:13:46.054+00:00","affected":[{"ecosystem":"Vendor product","name":"langflow","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"langflow-ai\",\n                    \"product\": \"langflow\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.9.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L","score":8.4,"severity":"HIGH"}],"references":["https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2","https://github.com/langflow-ai/langflow/pull/12832","https://github.com/langflow-ai/langflow/commit/2c9f498d664a3c32698b57d7c5e752625291060e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55255","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-55255","identifiers":["CVE-2026-55255"]},"retained":false,"historicalAffected":[]}],"coverage":[]}