Vulnerability details
CVE-2026-10134
IBM Langflow OSS
Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows
CVSS 3.1
10.0Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 10.0Critical | 3.1 | CVEProject cvelistV5 (CNA) (ibm) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| IBM | Langflow OSS | 1.0.0 ≤ v ≤ 1.9.3 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://www.ibm.com/support/pages/node/7277559 vendor-advisorypatch
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Details
- Published
- 2026-06-30
- Last updated
- 2026-07-01
- State
- Published
- Assigner (CNA)
- ibm
Exploit prediction (EPSS)
2.31%
Probability of exploitation in 30 days
83.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-94Improper Control of Generation of Code ('Code Injection')