Quick answers
- Is CVE-2026-10134 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-10134 being exploited in the wild.
- How severe is CVE-2026-10134?
- Critical severity, with a CVSS score of 10, published 30 June 2026.
- Which products and versions are affected?
- IBM Langflow OSS 1.0.0 through 1.9.3.
- Is there a fix for CVE-2026-10134?
- 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-2026-10134 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-10134?
- 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
A code injection vulnerability (CWE-94) exists in IBM Langflow OSS due to the unsafe use of the Python `exec()` function within the `PythonCodeStructuredTool` component. When a flow is marked as 'PUBLIC', the `/api/v1/build_public_tmp/{flow_id}/flow` endpoint becomes accessible without authentication. An attacker can provide malicious Python code in the `tool_code` template field, which is executed on the server during the flow-build process. This allows for full remote code execution (RCE), enabling the attacker to read secrets, modify the database, access cloud metadata endpoints, and establish persistence by tampering with public flow components. The vulnerability is addressed in version 1.10.0.
Affected products
- IBM Langflow OSS 1.0.0 through 1.9.3
Timeline
- 2026-06-23: advisory: Initial publication by IBM
- 2026-06-30: disclosed: NVD publication date