Quick answers
- Is CVE-2026-104316 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-104316 being exploited in the wild.
- How severe is CVE-2026-104316?
- Medium severity, with a CVSS score of 6.5, 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-2026-104316?
- 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-2026-104316 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-104316?
- 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
This is an improper authorization vulnerability (CWE-285) in the workflow job cancellation endpoint. An authenticated attacker can send an HTTP request to cancel background jobs belonging to other users because the application fails to perform flow-level permission checks before allowing the cancellation. The vulnerability requires authentication but no user interaction, and impacts availability by allowing denial-of-service of other users' computational work.
Affected products
- IBM Langflow OSS 1.0.0 through 1.12.3
Timeline
- 2026-10-29: disclosed