Quick answers
- Is CVE-2026-104331 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-104331 being exploited in the wild.
- How severe is CVE-2026-104331?
- Medium severity, with a CVSS score of 5.4, published 29 October 2026.
- Which products and versions are affected?
- IBM Langflow OSS 1.0.0 through 1.12.3.
- Is there a fix for CVE-2026-104331?
- 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-2026-104331 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-104331?
- Check whether you run IBM Langflow OSS 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 an SSRF in Langflow OSS versions 1.0.0 through 1.12.3 that allows an authenticated attacker to send arbitrary HTTP requests from the server's network context. This requires valid authentication but no user interaction. An attacker can enumerate internal networks, probe services, or access sensitive information reachable from the server.
Affected products
- IBM Langflow OSS 1.0.0 through 1.12.3
Timeline
- 2026-10-29: disclosed