by Kastro
Paper/Archive/CVE-2026-10134

CVE-2026-10134

IBM Langflow OSS — Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows

EPSS 2%CVSS 10.0
critical.is priorityof 100
47
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 83.4.834 × 2016.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Langflow OSS1.0.0 – 1.9.3–CNA

Scores by source

ibm (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

patchibm.com/support/pages/node/7277559