CVE-2026-103282

Medium

Description

Ghost versions 0.5.0 before 6.23.0 contain a concurrency issue in the staff invitation acceptance mechanism that allows multiple accounts to be created from a single invite token. Attackers can exploit this race condition by submitting concurrent requests with the same invitation token to create duplicate user accounts.

SeverityMedium

CVSS4.3

Exploit probability—

Product

Ghost

PublishedOct 1, 2026

First seenOct 1, 2026

Weakness typeCWE-362Race condition

How to fix

Update

TryGhost Ghost6.23.0 or later

Vendor advisories

github.com/TryGhost/Ghost/security/advisories/GHSA-vf9h-87xm-g767

Affected products

Product	Affected versions	Fixed in
TryGhost Ghost	0.5.0 ≤ v < 6.23.0	6.23.0

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