Quick answers
- Is CVE-2026-78569 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-78569 being exploited in the wild.
- How severe is CVE-2026-78569?
- High severity, with a CVSS score of 8.8, published 10 September 2026.
- Which products and versions are affected?
- IBM Langflow OSS 1.0.0 through 1.11.5.
- Is there a fix for CVE-2026-78569?
- 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-2026-78569 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-78569?
- Check whether you run IBM Langflow OSS or Langflow 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 exists in Langflow's agentic assistant code scanner, which uses an incomplete denylist to restrict dangerous operations. The scanner omits process-spawning primitives from its blocklist and contains a logic error where annotated class-body assignments bypass the safety check entirely. An authenticated attacker can craft a flow that uses these overlooked primitives to execute arbitrary code. The vulnerability requires prior authentication but no additional user interaction, and successful exploitation grants code execution at the application's privilege level.
Affected products
- IBM Langflow OSS 1.0.0 through 1.11.5
Timeline
- 2026-09-10: disclosed