Description (CNA)
GitHub MCP Server is GitHub's official MCP Server. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from different users share this singleton and their lockdown-related GraphQL queries are executed using the first user's credentials. The singleton is never updated to reflect later users' tokens. This vulnerability is fixed in 1.1.2.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| github / github-mcp-server | affected >= 0.22.0, < 1.1.2 |
CWE
CWE-284
References
ADP enrichment
No English description supplied.