CVE-2026-10134
Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows
Description
IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.
INFO
Published Date :
June 30, 2026, 7:56 p.m.
Last Modified :
June 30, 2026, 7:56 p.m.
Remotely Exploit :
Yes !
Source :
ibm
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 9a959283-ebb5-44b6-b705-dcc2bbced522 |
Solution
- Update Langflow to the latest version.
- Review and audit all flows and components.
- Restrict access to sensitive data.
- Monitor for suspicious activity.
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CVE-2026-10134 vulnerability anywhere in the article.