CVE-2026-8859
CriticalCVSS 9.9Exploitation Probability (EPSS)
Low risk28th percentile - higher than 28% of all known CVEs
Summary
IBM Langflow OSS 1.0.0 through 1.10.0 contains a path traversal vulnerability in the APIRequest component, where filenames from Content-Disposition headers are not sanitized. An attacker can write arbitrary files to locations accessible by the Langflow process.
Risk Assessment
An attacker can overwrite critical configuration files or inject malicious code, leading to system compromise.
Recommendation
Update IBM Langflow to version 1.10.1 or later. Disable the "Save to File" feature if not needed.
Original NVD description (English source)
IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow an attacker to write arbitrary files to unintended locations due to improper input validation in the APIRequest component. A path traversal vulnerability exists when the "Save to File" feature is enabled, where filenames extracted from HTTP response Content-Disposition headers are not sanitized before being joined to the temporary directory path. An attacker controlling an external HTTP server can supply crafted filename values containing path traversal sequences (e.g., ../), enabling arbitrary file writes to locations accessible by the Langflow process.