IBMCVE-2026-8446
IBM Langflow OSS: authentication bypass
High7.5CVE-2026-8446 · Published Aug 5, 2026 · updated Aug 6, 2026
IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol (MCP) composer endpoint when mcp_composer_enabled=true (default) and projects are configured with auth_type=oauth .
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Langflow OSS Product | >= 1.0.0, <= 1.10.3 | 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:N/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-306
More IBM advisories
All IBM| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 5 | IBM Langflow OSS: weak cryptography | High7.4 | No fix yet |
| Aug 5 | IBM Langflow OSS: code injection | High8.1 | No fix yet |
| Aug 5 | IBM Langflow OSS: code execution | High8.8 | No fix yet |
| Aug 5 | IBM Langflow OSS: information disclosure | High7.1 | No fix yet |
| Aug 5 | IBM Langflow OSS: code injection | High8.8 | No fix yet |
| Aug 5 | IBM Langflow OSS: broken cryptography | High7.4 | No fix yet |