Vulnerability · Published Oct 1, 2026 · Assigned by VulnCheck
CVE-2026-103273Ghost 4.3.0 before 6.58.0 Incorrect Authorization via Staff Token
Medium 4.3
In plain English
A medium-severity incorrect authorization in Ghost from TryGhost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.3%top 82.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Ghost versions 4.3.0 before 6.58.0 contain an authentication bypass vulnerability where lower-privilege staff users can use staff tokens to bypass post editing restrictions. Attackers with staff credentials can leverage tokens to edit posts beyond their assigned privilege level.
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- GitHub Security Advisory (GHSA-jj85-wvj2-r86m) vendor-advisory
- VulnCheck Advisory: Ghost 4.3.0 before 6.58.0 Incorrect Authorization via Staff Token third-party-advisory