CVE-2026-103267 Ghost 0.5.0 before 6.62.0 Arbitrary Email Registration via Staff Invite
Attackers can bypass email verification during staff invite acceptance to register accounts with arbitrary email addresses, potentially gaining unauthorized access.
- 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-2026-103267?
CVE-2026-103267 is a medium-severity authentication bypass 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 before 6.62.0 contain an authentication bypass vulnerability in staff invite acceptance that allows users to specify any email address when creating their account. Attackers can accept leaked invite tokens with attacker-controlled email addresses, or legitimate recipients can register with unintended email providers.
Weakness: CWE-807
Which versions are affected by CVE-2026-103267?
1 open source package ship an affected version, including ghost.
| Package | Affected | Fixed in |
|---|---|---|
ghost Bitnami | From 0.5.0 | 6.62.0 |
How do I fix CVE-2026-103267?
Upgrade ghost to 6.62.0 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-103267 being exploited?
There is no known exploitation of CVE-2026-103267 in the wild and no public exploit code.
Sources
Also known as BIT-ghost-2026-103267, GHSA-34x9-xfcp-9vvr, GHSA-xcgh-2828-cvmx, MINI-gm2g-vx7c-6hhc.