CVE-2026-70596
MEDIUMGhost: Cross-Site Scripting in Feature Image Captions
Title source: cnaDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv
X_Refsource_Misc x_refsource_misc
https://github.com/TryGhost/Ghost/pull/29635
X_Refsource_Misc x_refsource_misc
https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e
X_Refsource_Misc x_refsource_misc
https://github.com/TryGhost/Ghost/releases/tag/v6.54.1
Scores
CVSS v3
4.3
EPSS
0.0018
EPSS Percentile
7.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
npm/ghost
4.9.0 - 6.54.1npm
TryGhost/Ghost
>= 4.9.0, < 6.54.1
Published
Aug 05, 2026
Tracked Since
Aug 05, 2026