CVE-2026-103266 Ghost 5.2.0 before 6.62.0 Unauthenticated Stripe Checkout Account Modification
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-103266?
CVE-2026-103266 is a high-severity vulnerability in TryGhost Ghost, published on 1 Oct 2026.
Official description
Ghost versions 5.2.0 through versions prior to 6.62.0 allow a remote attacker, without authentication, to abuse the Stripe Checkout flow to attach a paid subscription to an existing member, modify that member's name, and inject content into newsletters sent to the member. Depending on the recipient's email client, the injected content may be rendered, resulting in HTML injection or cross-site scripting (XSS).
Weakness: CWE-863
Which versions are affected by CVE-2026-103266?
1 open source package ship an affected version, including ghost.
| Package | Affected | Fixed in |
|---|---|---|
ghost Bitnami | From 5.2.0 | 6.62.0 |
How do I fix CVE-2026-103266?
Upgrade ghost to 6.62.0 or later.
Is CVE-2026-103266 being exploited?
There is no known exploitation of CVE-2026-103266 in the wild and no public exploit code.
Sources
Also known as BIT-ghost-2026-103266, GHSA-gw54-gv3c-2g94, GHSA-qppx-rw6v-xjqf, MINI-fxv9-4c2m-8xvv.