IBM Langflow OSS 1.0.01.10.2 Directory Traversal via URL
CVE-2026-17621 Published on September 4, 2026
Langflow OSS is affected by arbitrary file read due to path traversal vulnerabilities in file and knowledge base components
IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences ( /.. /) to view arbitrary files on the system.
Vulnerability Analysis
CVE-2026-17621 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-2026-17621 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-17621
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Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.10.2 is affected.