Vulnerability · Published Oct 2, 2026 · Assigned by VulnCheck

CVE-2026-104412Ghost 0.5.0 before 6.64.0 Privilege Escalation via Staff Role Assignment

Medium 4.3

In plain English

A medium-severity privilege mismanagement in Ghost from TryGhost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 91.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Ghost 0.5.0 before 6.64.0 does not correctly restrict staff role assignment, allowing users with the Editor or Super Editor role to assign their own role to other staff despite lacking permission to do so. An authenticated Editor or Super Editor can promote Author and Contributor users to Editor or Super Editor.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ghost	6.64.0	GHSA-4pvx-fwjj-8gpc

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	0.5.0 – before 6.64.0

Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

GitHub Security Advisory (GHSA-4pvx-fwjj-8gpc) vendor-advisory
VulnCheck Advisory: Ghost 0.5.0 before 6.64.0 Privilege Escalation via Staff Role Assignment third-party-advisory