CVE-2026-104416: Ghost 4.39.0 before 6.64.0 Invite Token Disclosure via Admin API

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-02 · updated 2026-10-06
Weakness: CWE-203

Description

Ghost from 4.39.0 before 6.64.0 contains an information disclosure vulnerability in the Admin API that allows staff users to view secret tokens of pending staff invites. Staff users with invite viewing permission can accept pending invites for higher-privileged roles to escalate their privileges.

Affected products

TryGhost Ghost: from 4.39.0 before 6.64.0 — fixed in 6.64.0

How to fix

Upgrade to a fixed version: TryGhost Ghost 6.64.0. Check the vendor advisory for mitigations.

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-v6q3-xqxm-6f5v
https://www.vulncheck.com/advisories/ghost-4.39.0-before-6.64.0-invite-token-disclosure-via-admin-api

Get alerted when CVE-2026-104416 or the next vulnerability affects your stack