MCP Registry: Unauthenticated SSRF: HTTP namespace verification dials 6to4 / NAT64 / site-local IPv6 addresses, bypassing private-address allowlist

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-44430 · Microsoft / collected KEV context

EUVD-2026-30488

GHSA-r48c-v28r-pf6v

GO-2026-5607

cve-program · CVE-2026-44430

• https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-r48c-v28r-pf6v

euvd · EUVD-2026-30488

• https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-r48c-v28r-pf6v

nvd · CVE-2026-44430

• https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-r48c-v28r-pf6v

osv · GHSA-r48c-v28r-pf6v

• https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-r48c-v28r-pf6v
• https://nvd.nist.gov/vuln/detail/CVE-2026-44430
• https://github.com/modelcontextprotocol/registry/pull/1250
• https://github.com/modelcontextprotocol/registry/commit/f5f40bd98084466eaf18fe48ea62a0d534caa774
• https://github.com/modelcontextprotocol/registry
• https://github.com/modelcontextprotocol/registry/releases/tag/v1.7.7

osv · GO-2026-5607

• https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-r48c-v28r-pf6v
• https://nvd.nist.gov/vuln/detail/CVE-2026-44430
• https://github.com/modelcontextprotocol/registry/commit/f5f40bd98084466eaf18fe48ea62a0d534caa774
• https://github.com/modelcontextprotocol/registry/pull/1250
• https://github.com/modelcontextprotocol/registry/releases/tag/v1.7.7

No related operational record is retained in the current change model.