Role Assignment Vulnerability in Ghost CMS by TryGhost
CVE-2026-105678

4.3MEDIUM

Key Information:

Vendor

Tryghost

Status
Ghost
Vendor
CVE Published:
5 October 2026

What is CVE-2026-105678?

In the Ghost content management system, versions from 0.5.0 until 6.64.0 contained a vulnerability that allowed staff users with Editor or Super Editor roles to assign their own roles to Author and Contributor users without the necessary permissions. This loophole could lead to unauthorized role escalations, potentially compromising the integrity of user permissions. The issue has been addressed and resolved in subsequent release 6.64.0, reinforcing access control within the system.

Affected Version(s)

Ghost >= 0.5.0, < 6.64.0

References

https://github.com/TryGhost/Ghost/security/advisories/GHS...
x_refsource_CONFIRM
https://github.com/TryGhost/Ghost/issues/30764
x_refsource_MISC
https://github.com/TryGhost/Ghost/commit/99c5642b9bb481df...
x_refsource_MISC

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.