CVE-2026-103267

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.

CVSS 4.0

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-25)

CWE

CWE-807

Published

2026-10-01

Modified

2026-10-01

Record from

the NVD, synced 2026-10-19

References

• https://github.com/TryGhost/Ghost/security/advisories/GHSA-xcgh-2828-cvmx
• https://www.vulncheck.com/advisories/ghost-0.5.0-before-6.62.0-arbitrary-email-registration-via-staff-invite

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