All vulnerabilities
CVE-2026-103267GHSA-xcgh-2828-cvmx

Ghost 0.5.0 before 6.62.0 Arbitrary Email Registration via Staff Invite

TryGhost GhostApplications & CMS
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 17% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6.62.0Fixed versionCVE List
Published1 Oct 2026Updated 1 Oct 2026CVE List

What fixes it

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 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.

Text from CVE List

Affected versions 2

  • Ghostaffected: 0.5.0 before 6.62.0CVE List
  • Ghostunaffected: 6.62.0CVE List

References 2