CVE-2026-103289 Ghost 5.9.0 before 6.44.1 Authorization Bypass via Comments
Authenticated members can access restricted comment data due to an input validation flaw in the comments feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-103289?
CVE-2026-103289 is a high-severity missing authorization vulnerability in TryGhost Ghost, published on 1 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Ghost from 5.9.0 before 6.44.1 contains an input validation issue in the comments feature that allows authenticated members to access comments they are not authorized to view, resulting in disclosure of restricted comment data.
Weakness: CWE-943
Which versions are affected by CVE-2026-103289?
How do I fix CVE-2026-103289?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-103289 being exploited?
There is no known exploitation of CVE-2026-103289 in the wild and no public exploit code.
Sources
Also known as GHSA-83rv-pxjq-8h5x.