IBM Langflow <1.10.0 Arbitrary File Write via Malicious Flow
CVE-2026-7667 Published on July 17, 2026
Path Traversal Vulnerability in API Request Component Content-Disposition Header Processing
IBM Langflow OSS 1.0.0 through 1.10.0 allows an authenticated attacker to create a malicious flow pointing to an attacker-controlled URL that returns a specially crafted Content-Disposition header (e.g., filename="../../../target/path" ), enabling arbitrary file write operations with attacker-controlled content to any path accessible by the Langflow process.
Vulnerability Analysis
CVE-2026-7667 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 be very high.
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-2026-7667 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-7667
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Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.10.0 is affected.