CVE-2026-105675: Ghost: Invite Token Disclosure in Ghost Admin API
Impact
Staff users with permission to view staff invites were able to discover the secret token of pending invites, including invites for roles with higher privileges than their own. This could allow a staff user to escalate their privileges by accepting a pending invite.
Vulnerable versions
This vulnerability is present in Ghost from v4.39.0 up to v6.64.0.
Patches
v6.64.0 contains a fix for this issue.
How to update
For self-hosters using Docker, find Docker's official Ghost image here. Updating a Docker-based Ghost instance is documented here.
If your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here.
References
Ghost thanks CoryRoo, Pedro Pinho, and Nhat Anh Vu for disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email us at security@ghost.org.
Other sources
Ghost is a Node.js content management system. From 4.39.0 until 6.64.0, staff users with permission to view staff invites were able to discover the secret token of pending invites, including invites for roles with higher privileges than their own. This could allow a staff user to escalate their privileges by accepting a pending invite. This issue is fixed in version 6.64.0.
— NVD
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
npm/ghostto a version that resolves this vulnerability.Fixed in 6.64.0 - Upgrade
Upgrade
Ghostto a version that resolves this vulnerability.Fixed in 6.64.0
Event History
Frequently Asked Questions
Who can exploit this issue?
A staff user who has permission to view staff invites can exploit it. The user may have a lower-privileged role than the role assigned to a pending invite.
What must be present for privilege escalation to occur?
There must be a pending staff invite for a role with higher privileges than the attacking staff user. The attacker can discover that invite's secret token and accept the invite to gain the higher role.
Are default installations affected?
The provided information does not identify whether the affected invite-view permission is granted in Ghost's default role configuration. Exposure depends on whether a staff user can view staff invites and whether higher-privilege pending invites exist.
What versions should be remediated?
Ghost versions from 4.39.0 through 6.64.0 are affected according to the advisory. Upgrade to version 6.64.0, which fixes the issue.
What can be done if an immediate upgrade is not possible?
Restrict the ability to view staff invites to only fully trusted staff, and avoid leaving pending invites for higher-privilege roles available to lower-privileged staff. Review pending invites and the staff users who can access them.