Stored Cross-Site Scripting Vulnerability in Ghost Platform
CVE-2026-104411

8.5HIGH

Key Information:

Vendor

Tryghost

Status
Ghost
Vendor
CVE Published:
2 October 2026

What is CVE-2026-104411?

The Ghost platform versions prior to 6.64.0 exhibit a stored cross-site scripting vulnerability that permits staff users to upload files with executable scripts. This risky oversight allows attackers to potentially serve malicious scripts via the default local storage adapter, leading to unauthorized access and compromise of other staff user sessions. To mitigate this issue, users are advised to update to the latest version of Ghost as soon as possible.

Affected Version(s)

Ghost 6.22.1 < 6.64.0

Ghost 6.64.0

References

https://github.com/TryGhost/Ghost/security/advisories/GHS...
vendor-advisory
https://www.vulncheck.com/advisories/ghost-6.22.1-before-...
third-party-advisory

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

evertrustai
Enis-Atilgan
doanmanhducz
iamharshitgupta
5255fgh
.