CVE-2026-10134

Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows

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.

Affected

IBM · Langflow OSS

CVSS v3.1 ibm

10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

0.64% chance of exploitation in the next 30 days, 48th percentile

Published

2026-06-30

Updated

2026-07-01

Proof-of-concept exploits (1)

• rmhowe425/POC-CVE-2026-10134

References

• CVE Record
• NVD entry

Related

• CVE-2026-0768
• CVE-2026-0769
• CVE-2026-18729
• CVE-2026-19286
• CVE-2026-19295
• CVE-2026-5027