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GitHub Advisory Database

Security vulnerability database inclusive of CVEs and GitHub originated security advisories from the world of open source software.

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MCP Registry has an unauthenticated SSRF: HTTP namespace verification dials 6to4 / NAT64 / site-local IPv6 addresses, bypassing private-address allowlist Moderate
CVE-2026-44430 was published for github.com/modelcontextprotocol/registry (Go) May 8, 2026
matte1782 Credited to matte1782 and rdimitrov rdimitrov rdimitrov
Kirby CMS's content locks disclose IDs and emails of inaccessible users from `users.access/list` permissions Moderate
CVE-2026-45334 was published for getkirby/cms (Composer) May 27, 2026
matte1782 Credited to matte1782
GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion Moderate
CVE-2026-48529 was published for github.com/github/github-mcp-server (Go) Jun 25, 2026
hewei-gikaku Credited to hewei-gikaku, matte1782, kerobbi, and JoannaaKL matte1782 matte1782
kerobbi kerobbi JoannaaKL JoannaaKL
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