CVE-2026-105643 Ghost - Stored XSS

Ghost 6.34.0 to 6.67.0 contains a stored cross-site scripting caused by insufficient sanitization of embed cards in the editor, letting any staff user execute scripts in other staff users' admin sessions, exploit requires staff user privileges.

CVSS base score 7.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.27% 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 6.67.0 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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