Quick answers
- Is CVE-2026-19295 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-19295 being exploited in the wild.
- How severe is CVE-2026-19295?
- Critical severity, with a CVSS score of 9.9, published 28 August 2026.
- Which products and versions are affected?
- IBM Langflow OSS 1.0.0 through 1.11.1.
- Is there a fix for CVE-2026-19295?
- A patch was published on 2026-08-28: Fix available in version 1.11.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-19295 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-19295?
- 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 is an eval injection (CWE-95) in the create_input_schema_from_dict function, where attacker-controlled flow template type field strings reach Pydantic's ForwardRef evaluation path. This path internally calls eval() with an unrestricted builtins namespace, allowing arbitrary Python code execution. An authenticated attacker can save a flow with a crafted type field value and trigger a build of a wrapper flow that references it, executing arbitrary OS commands under the server process identity. The attack bypasses the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control. This requires authentication but no user interaction. IBM has released a fix in version 1.11.2.
Affected products
- IBM Langflow OSS 1.0.0 through 1.11.1
Timeline
- 2026-08-28: disclosed
- 2026-08-28: patched: Fix available in version 1.11.2