{"id":"CVE-2026-18899","aliases":["EUVD-2026-67954","GHSA-4w6q-3qxv-hmwg"],"status":"published","title":"Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities","description":"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00695,"percentile":0.53308,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2026-08-28T20:51:48Z","modified":"2026-11-04T02:47:32Z","products":[{"vendor":"ibm","product":"langflow oss"},{"vendor":"langflow","product":"langflow"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7284579","tags":["vendor-advisory","patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18899"},{"url":"https://github.com/advisories/GHSA-4w6q-3qxv-hmwg"}],"sources":{"cve":[{"id":"CVE-2026-18899","title":"Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities","description":"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal.","status":"published","published":"2026-08-28T20:51:48.083Z","modified":"2026-09-01T01:59:42.374Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:20:12.260247Z"}],"euvd":[{"id":"EUVD-2026-67954","description":"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal.","status":"published","published":"2026-08-28T20:51:48Z","modified":"2026-09-01T01:59:42Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T18:01:19.285273Z"}],"ghsa":[{"id":"GHSA-4w6q-3qxv-hmwg","title":"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due...","description":"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal.","status":"published","published":"2026-08-29T00:31:01Z","modified":"2026-08-29T00:31:02Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:11:08.705354Z"}],"nvd":[{"id":"CVE-2026-18899","description":"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal.","status":"published","published":"2026-08-28T22:16:47.107Z","modified":"2026-09-01T02:16:57.787Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:42.366888Z"}],"osv":[{"id":"CVE-2026-18899","description":"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal.","status":"published","published":"2026-08-28T22:16:47.107Z","modified":"2026-11-04T02:47:32.37760862Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-04T02:53:45.692342Z"}]}}