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OpenAdvisories
Medium · 4.0 CVE-2026-105648 BIT-ghost-2026-105648EUVD-2026-92755GHSA-r7f2-6fj8-6fg2

Ghost: Private IP Filtering Bypass via IPv6 Transition Addresses

Published Oct 5, 2026 · Updated Oct 6, 2026 · Assigned by GitHub_M

Description

Ghost is a Node.js content management system. From 6.0.9 until 6.65.0, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network on some network configurations. A successful attack would not result in any response data being returned. This issue is fixed in version 6.65.0.

Affected products

VendorProductAffectedFixed
TryGhost Ghost >= 6.0.9, < 6.65.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm ghost >= 6.0.9, < 6.65.0 6.65.0 GHSA-r7f2-6fj8-6fg2

References