Vulnerability · Published Oct 1, 2026 · Assigned by VulnCheck
CVE-2026-103278Ghost 5.8.0 before 6.34.0 Staff Account Takeover via Admin iframe
High 7.3
In plain English
A high-severity security flaw 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 19% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.3%top 80.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Ghost versions 5.8.0 before 6.34.0 contain an input validation vulnerability in the admin iframe that allows attackers to take over staff user accounts. Attackers with content publishing privileges can craft malicious pages that, when visited by active staff users, enable account takeover through improper input validation.
Affected products (as reported)
Weakness: CWE-23 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-5pxf-whwv-g54g) vendor-advisory
- VulnCheck Advisory: Ghost 5.8.0 before 6.34.0 Staff Account Takeover via Admin iframe third-party-advisory