{"id":"CVE-2026-48529","revision":"ca147ddf32aa4a82a12bf7c545095e15","records":[{"revision":"ca147ddf32aa4a82a12bf7c545095e15","observedAt":"2026-10-25T12:17:32.273+00:00","statement":{"source":"nvd","id":"CVE-2026-48529","aliases":[],"title":"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 us…","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.","state":0,"publishedAt":"2026-06-26T17:16:33.82+00:00","modifiedAt":"2026-06-27T04:17:49.63+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","score":6,"severity":"MEDIUM"}],"references":["https://github.com/github/github-mcp-server/security/advisories/GHSA-pjp5-fpmr-3349"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48529","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-284"],"productCriteria":[],"sourceDates":{"published":"2026-06-26T17:16:33.820","lastModified":"2026-06-27T04:17:49.630"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-48529","identifiers":["CVE-2026-48529"]},"retained":false,"historicalAffected":[]}],"coverage":[]}