CVE-2026-8446
High
Description
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 .
SeverityHigh
CVSS7.5
Exploit probability—
Product
Langflow
PublishedAug 5, 2026
First seenAug 5, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
Update
- langflow langflow1.11.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| langflow langflow | 1.0.0 ≤ v < 1.11.0 | 1.11.0 |
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