CVE-2026-105649

Ghost: Stored XSS via SVG Uploads Bypassing Sanitization

State: Published
Severity: 7.3 High
Published: Oct 5, 2026
Updated: Oct 6, 2026
Reserved: Oct 5, 2026

Description

Ghost is a Node.js content management system. From 4.22.0 until 6.65.0, SVG media thumbnails and SVG images uploaded with a non-SVG file extension were stored without sanitization. This allowed any staff user, including Contributors, to host scripts on the site's domain, possibly resulting in compromise of other staff users' admin sessions. This issue is fixed in version 6.65.0.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-434 Unrestricted Upload of File with Dangerous Type

Affected Products

Product	Versions
GhostTryGhost	>= 4.22.0, < 6.65.0Affected

References

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