CVE-2026-7869: IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledg
Summary
IBM Langflow OSS versions 1.0.0 through 1.10.3 has a path traversal vulnerability (a flaw where an attacker can access files outside their intended directory) in the Knowledge Bases API endpoint. An authenticated attacker can exploit this by sending specially crafted knowledge base names that aren't properly checked, allowing them to create directories and write files anywhere on the server.
Vulnerability Details
5.4(medium)
EPSS: 0.0%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
network
low
low
none
August 5, 2026
Classification
Affected Vendors
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Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-7869
First tracked: August 5, 2026 at 08:08 PM
Classified by LLM (prompt v3) · confidence: 92%