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CVE-2026-53944 Ghost: Private IP filtering bypass to make server-side requests to internal services

🗓️ 24 Jun 2026 18:10:30Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 2 Views

CVE-2026-53944 Ghost bypasses private IP filter via IPv6 to private IPv4 in external requests (6.0.9–6.21.1); fixed in 6.21.1.

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08 Jul 2026 08:26Current
6Medium risk
Vulners AI Score6
CVSS 3.15.8
EPSS0.00197
2