CVE-2026-103273 Ghost 4.3.0 before 6.58.0 Incorrect Authorization via Staff Token
Lower-privilege staff users can bypass post editing restrictions using staff tokens, allowing unauthorized modification of content.
- 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-2026-103273?
CVE-2026-103273 is a medium-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 versions 4.3.0 before 6.58.0 contain an authentication bypass vulnerability where lower-privilege staff users can use staff tokens to bypass post editing restrictions. Attackers with staff credentials can leverage tokens to edit posts beyond their assigned privilege level.
Weakness: CWE-863
Which versions are affected by CVE-2026-103273?
1 open source package ship an affected version, including ghost.
| Package | Affected | Fixed in |
|---|---|---|
ghost Bitnami | From 4.3.0 | 6.58.0 |
How do I fix CVE-2026-103273?
Upgrade ghost to 6.58.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-103273 being exploited?
There is no known exploitation of CVE-2026-103273 in the wild and no public exploit code.
Sources
Also known as BIT-ghost-2026-103273, GHSA-3qxh-9f4j-4rwp, GHSA-jj85-wvj2-r86m, MINI-c33g-35gx-qv6f.