CVE-2026-105648

Ghost: Private IP Filtering Bypass via IPv6 Transition Addresses

State: Published
Severity: 4.0 Medium
Published: Oct 5, 2026
Updated: Oct 6, 2026
Reserved: Oct 5, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	4.0 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-184 Incomplete List of Disallowed Inputs
CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
GhostTryGhost	>= 6.0.9, < 6.65.0Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.