Ghost: Cross-Site Scripting in Feature Image Captions

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-70596
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-05 16:17:03 UTC
Updated2026-08-05 18:17:14 UTC
DescriptionGhost 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TryGhost Ghost affected >= 4.9.0, < 6.54.1 Not specified

References

ReferenceSourceLinkTags
github.com/TryGhost/Ghost/releases/tag/v6.54.1 [email protected] github.com
github.com/TryGhost/Ghost/pull/29635 [email protected] github.com
github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e [email protected] github.com
github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv [email protected] github.com
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