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Vulnerabilities CVE-2026-8859

CVE-2026-8859

Critical
Open
TLP:CLEAR

Path Traversal in APIRequest Component via Content-Disposition Header

NVD CVE.org
Critical Infrastructure

AI Analysis

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Description

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.

Details

CVSS Score
9.9
EPSS Score
0.37%

29.7th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Confidence
90%
Published
Jul 17, 2026
Last Modified
Jul 17, 2026
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