Path Traversal IBM Langflow OSS 1.0.01.10.3 KB API
CVE-2026-7869 Published on August 5, 2026
Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are used directly to create file paths without proper sanitization or containment checks. An authenticated attacker can exploit this flaw to create directories and write files anywhere on the server's filesystem.
Vulnerability Analysis
CVE-2026-7869 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-7869 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-7869
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Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.10.3 is affected.