CVE-2026-103266GHSA-qppx-rw6v-xjqf
Ghost 5.2.0 before 6.62.0 Unauthenticated Stripe Checkout Account Modification
TryGhost GhostApplications & CMS
CVSS
7.1HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.30%Chance of exploitation activity in the next 30 days, higher than 21% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 6.62.0GhostCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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).
Text from CVE List
Affected versions 2
- Ghostaffected: 5.2.0 before 6.62.0CVE List
- Ghostunaffected: 6.62.0CVE List