CVE-2026-17622: IBM Langflow OSS path traversal in file and knowledge base components

CVE-2026-17622 · Severity: medium · CVSS 6.5 · Published 2026-09-04

IBM Langflow OSS is a workflow automation platform that allows users to build applications using language models and data components. An authenticated attacker can exploit path traversal vulnerabilities in the file upload, knowledge base, and directory components to read arbitrary files from the server, potentially exposing sensitive credentials, private keys, and authentication secrets. This could lead to further compromise of the application and underlying systems.

Technologies: Apple macOS, IBM Langflow OSS, Langflow, Linux Kernel, Microsoft Windows. Vendors: Apple, IBM, Langflow, Linux, Microsoft.

Quick answers

Is CVE-2026-17622 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-17622 being exploited in the wild.
How severe is CVE-2026-17622?
Medium severity, with a CVSS score of 6.5, published 4 September 2026.
Which products and versions are affected?
IBM Langflow OSS 1.0.0 through 1.10.2.
Is there a fix for CVE-2026-17622?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-17622 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-17622?
Check whether you run Apple macOS, IBM Langflow OSS, Langflow or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a path traversal flaw (CWE-22) affecting multiple components in Langflow OSS versions 1.0.0 through 1.10.2. The Directory component fails to validate user-supplied path values against traversal sequences; the Knowledge Base ingestion endpoint ignores server-side path restrictions and accepts arbitrary paths from client requests; and the Knowledge Base flow component does not enforce path containment guards during ingest and retrieve operations. All three issues allow an authenticated attacker to read arbitrary files accessible to the server process, including system files and other tenants' data. The attack requires valid authentication credentials but no user interaction. IBM recommends upgrading to version 1.10.3 or later.

Affected products

  • IBM Langflow OSS 1.0.0 through 1.10.2

Timeline

  • 2026-09-04: disclosed

References

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