IBMCVE-2026-13448
IBM Langflow OSS: remote code execution
High8.1CVE-2026-13448 · Published Jul 17, 2026 · updated Jul 23, 2026
IBM Langflow OSS 1.0.0 through 1.10.1 Lanflow OSS contains an unauthenticated remote code execution vulnerability in the public flow build endpoint ( /api/v1/build_public_tmp/{flow_id}/flow ). The vulnerability stems from an incomplete denylist in the validate_public_flow_no_code_execution() function that fails to block several code-execution agent components including OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Langflow OSS Product | >= 1.0.0, <= 1.10.1 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-184
More IBM advisories
All IBM| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 17 | IBM Langflow OSS: insecure direct object reference | High8.1 | No fix yet |
| Jul 17 | IBM Langflow OSS: hard-coded credentials | Critical9.8 | No fix yet |
| Jul 17 | IBM Langflow OSS: remote code execution | Critical9.8 | No fix yet |
| Jul 17 | IBM Langflow OSS: privilege escalation | Critical9.9 | No fix yet |
| Jul 17 | IBM Langflow OSS: improper input validation | Critical9.9 | No fix yet |
| Jul 17 | IBM Security Verify Access: information disclosure | Medium5.3 | No fix yet |