IBMCVE-2026-8505
IBM Langflow OSS: remote code execution
Critical9.8CVE-2026-8505 · Published Jul 17, 2026 · updated Jul 23, 2026
IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Langflow OSS Product | >= 1.0.0, <= 1.10.0 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-306
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: 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 |
| Jul 17 | IBM Langflow OSS: remote code execution | High8.8 | No fix yet |