{"id":"CVE-2026-93680","kind":"vulnerability","aliases":["CVE-2026-93680"],"related":[],"title":"Langflow: improper authentication lets a remote attacker bypass security restrictions","description":"IBM Langflow OSS 1.0.0 through 1.12.8 could allow a remote attacker to bypass security restrictions due to improper authentication.","summary":"IBM Langflow OSS versions 1.0.0 through 1.12.8 fail to properly check authentication, so a remote attacker can bypass security restrictions. The sources do not say what the attacker can reach after the bypass.","severity":"critical","cvss":9.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["ai-apps","ai-tooling","langflow","self-hosted"],"not_affected_if":["versions-outside-1.0.0-to-1.12.8"],"how_to_check":"- Check the installed Langflow version, for example with `pip show langflow`, and compare it to the affected range 1.0.0 through 1.12.8.","fix":"- Langflow OSS: a fixed version above `1.12.8` is implied by the affected range, but the sources do not name it.","status":"open","published_at":"2026-10-29T16:20:06+00:00","first_seen_at":"2026-10-29T16:26:03+00:00","triaged_at":"2026-10-29T16:27:12+00:00","updated_at":"2026-10-29T16:27:12+00:00","category":"ai-tooling","confidence":0.6,"triage":{"at":"2026-10-29T16:27:12Z","model":"claude-haiku-5-5","output":{"fix":"- Langflow OSS: a fixed version above `1.12.8` is implied by the affected range, but the sources do not name it.\n- unknown","reach":"internet","title":"Langflow: improper authentication lets a remote attacker bypass security restrictions","impact":"high","summary":"IBM Langflow OSS versions 1.0.0 through 1.12.8 fail to properly check authentication, so a remote attacker can bypass security restrictions. The sources do not say what the attacker can reach after the bypass.","audience":"businesses","category":"ai-tooling","nicknames":[],"who_cares":["langflow","self-hosted","ai-apps"],"confidence":0.6,"fix_status":"unknown","needs_auth":"unknown","worst_case":"remote attacker bypasses access restrictions on the Langflow server","analyst_note":"Find the NVD and IBM advisory text for CVE-2026-93680 to confirm the fixed version, the affected endpoint, and whether authentication is required.","how_to_check":"- Check the installed Langflow version, for example with `pip show langflow`, and compare it to the affected range 1.0.0 through 1.12.8.\n- unknown for any other check; the sources do not say which endpoint or setting is involved.","plain_action":"","needs_analyst":true,"not_affected_if":["versions-outside-1.0.0-to-1.12.8"],"who_is_affected":"Teams running self-hosted IBM Langflow OSS from 1.0.0 through 1.12.8 that are reachable over a network. The sources do not say whether default configuration is affected or whether login is needed to trigger the flaw.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000707,"input_tokens":4087,"output_tokens":596,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-93680':13A,16A '1.0.0':31B,63C '1.12.8':33B,65C 'ai':18B,21B 'ai-app':17B 'ai-tool':20B 'allow':67C 'app':19B 'attack':7A,42B,54B,70C 'authent':3A,38B,78C 'bypass':8A,44B,59B,72C 'check':37B 'could':66C 'cve':11A,14A 'due':75C 'fail':34B 'host':26B 'ibm':27B,60C 'improp':2A,77C 'langflow':1A,23B,28B,61C 'let':4A 'oss':29B,62C 'proper':36B 'reach':56B 'remot':6A,41B,69C 'restrict':10A,46B,74C 'say':51B 'secur':9A,45B,73C 'self':25B 'self-host':24B 'sourc':48B 'tool':22B 'version':30B","nicknames":[],"mitigations":[],"who_affected":"Teams running self-hosted IBM Langflow OSS from 1.0.0 through 1.12.8 that are reachable over a network. The sources do not say whether default configuration is affected or whether login is needed to trigger the flaw.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"first_public_at":"2026-10-29T16:20:06+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"psirt@us.ibm.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-93680","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93680","severity":null,"published_at":"2026-10-29T16:20:06+00:00","modified_at":"2026-10-29T16:20:06+00:00","first_seen_at":"2026-10-29T16:26:03+00:00","fetched_at":"2026-10-29T16:26:03+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}