{"id":"CVE-2026-51888","title":"langflow-ai langflow v1.8.4 is affected by: Directory Traversal","summary":"langflow-ai langflow v1.8.4 is affected by: Directory Traversal. The impact is: Arbitrary file write outside the intended workspace or storage boundary.. The component is: src/backend/base/langflow/api/v1/knowledge_bases.py:knowledge_bas…","severity":"none","published":"2026-10-01","updated":"2026-10-01","sourceUpdated":"2026-10-01T22:17:03.527","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-51888","references":[{"url":"https://gist.github.com/Ro1ME/c85f513d1fd702c686cffe061cbf8ef5","label":"cve@mitre.org"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-01T23:03:32.776Z","slug":"CVE-2026-51888","body":"## Overview\n\nlangflow-ai langflow v1.8.4 is affected by: Directory Traversal. The impact is: Arbitrary file write outside the intended workspace or storage boundary.. The component is: src/backend/base/langflow/api/v1/knowledge_bases.py:knowledge_bases-create_knowledge_base-a-live-http-post-to-create-knowledge-base. The attack vector is: Attack surface: HTTP or browser-backed service path. A public-facing upload or HTTP route handler forwards an attacker-controlled path or filename into host file creation without any visible boundary enforcement. ¶¶ A weakness has been identified in langflow-ai langflow up to 1.8.4. langflow contains an absolute path traversal vulnerability in knowledge_bases-create_knowledge_base-a-live-http-post-to-create-knowledge-base (src/backend/base/langflow/api/v1/knowledge_bases.py:51). An attacker can write or overwrite files outside the intended working directory by providing absolute paths in the knowledge base creation endpoint.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}