High severity · published Oct 2, 2026
CVE-2026-104413
Ghost 5.94.0 before 6.64.0 Stored XSS via Bookmark Card Images
7.3
CVSS
0.3%
EPSS
No
On KEV
Description
Ghost from 5.94.0 before 6.64.0 contains a stored cross-site scripting vulnerability that allows staff users, including Contributors, to host arbitrary HTML by abusing bookmark card image fetching. Attackers can create bookmark cards that store non-image files from external websites as icons or thumbnails to compromise other staff users' admin sessions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GH
Ghost · TryGhost
5.94.0 before 6.64.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104413
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104413
vendor-advisory
https://github.com/TryGhost/Ghost/security/advisories/GHSA-347q-26qq-h2p6
third-party-advisory
https://www.vulncheck.com/advisories/ghost-5.94.0-before-6.64.0-stored-xss-via-bookmark-card-images
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