What is GHSA-fgrp-x4pm-v894?

GHSA-fgrp-x4pm-v894 is a security advisory published by GitHub Security Advisories with Medium severity. Ghost versions 0.5.0 before 6.23.0 contain a concurrency issue in the staff invitation acceptance...

Which CVE IDs does GHSA-fgrp-x4pm-v894 cover?

GHSA-fgrp-x4pm-v894 covers the following CVE IDs: CVE-2026-103282. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-fgrp-x4pm-v894?

GHSA-fgrp-x4pm-v894 has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

GHSA-fgrp-x4pm-v894MediumCVSS 4.3

Ghost versions 0.5.0 before 6.23.0 contain a concurrency issue in the staff invitation acceptance...

Vendor

GitHub Security Advisories

Published

October 1, 2026

Last Modified

October 1, 2026

🔗 CVE IDs covered (1)

CVE-2026-103282 →

📋 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.

🔗 References (4)

https://github.com/TryGhost/Ghost/security/advisories/GHSA-vf9h-87xm-g767
https://nvd.nist.gov/vuln/detail/CVE-2026-103282
https://www.vulncheck.com/advisories/ghost-0.5.0-before-6.23.0-multiple-account-creation-via-invite-token
https://github.com/advisories/GHSA-fgrp-x4pm-v894