All intelligence
// vulnerability record
cached · NVD via COSMOS syncCVE-2026-48529
MEDIUMpublished 2026-06-26 17:16 UTC · 2 days ago · modified 2026-06-27 04:17 UTC
6.0
CVSS / 10
// description
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.
// cvss 3.1 vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
// weaknesses (CWE)
- CWE-284