{"cve_id":"CVE-2026-55255","published":"2026-06-23T17:17:08.050000+00:00","last_modified":"2026-10-25T23:10:00.167000+00:00","vuln_status":"Analyzed","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.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L","base_score":8.4,"base_severity":"HIGH","attack_vector":"NETWORK","privileges_req":"LOW","user_interaction":"NONE","scope":"CHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"LOW","cwe_ids":["CWE-639"],"in_kev":true,"kev_date_added":"2026-07-07","kev_ransomware":false,"epss_score":0.00887,"epss_percentile":0.59295,"cap_rule_version":"0.1.1","stage":"PRIV_ESC","req_access":"USER","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"PRIV","caps":["INFO_DISCLOSURE","PRIV_GAIN","TAMPER"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-28T03:37:13.940719+00:00","first_seen":"2026-06-23T17:17:08.050000+00:00","kev_first_seen":"2026-07-07T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["langflow"],"products":["langflow"],"affected":[{"vendor":"langflow","product":"langflow","ranges":["< 1.9.1"]}]}