CVE-2026-105649 Ghost - Stored XSS

Ghost 4.22.0 to 6.65.0 contains a stored XSS caused by unsanitized SVG media thumbnails and SVG images uploaded with non-SVG extensions, letting staff users host scripts on the site domain, exploit requires staff user privileges.

CVSS base score 7.3 /10

High

CISA KEV: Not listed
Public exploit: None known
Authentication: Required
EPSS: 0.30% chance of exploitation in 30 days

View the NVD record ↗

Details

Type: Stored XSS
Impact: Stored XSS
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Published: 5 October 2026
Updated: 15 October 2026
Weakness: CWE-79

Vendor fix

Update to version 6.65.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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