Medium severity · published Aug 5, 2026
CVE-2026-70596
Ghost: Cross-Site Scripting in Feature Image Captions
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GH
Ghost · TryGhost
>= 4.9.0, < 6.54.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-70596
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-70596
github.com
https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e
github.com
https://github.com/TryGhost/Ghost/pull/29635
github.com
https://github.com/TryGhost/Ghost/releases/tag/v6.54.1
github.com
https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv
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