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GHSA-PVRJ-8CG3-J5F8 auth-fetch-mcp has SSRF Protection Bypass via IPv4-mapped IPv6 Loopback

🗓️ 01 Jul 2026 18:16:22Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 2 Views

Auth-fetch-mcp SSRF bypass due to IPv4-mapped IPv6 loopback hex normalization flaw in isPrivateV6.

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01 Jul 2026 18:30Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.4
2