Relative Path Traversal in Ghost - CVE-2026-103278
Published: August 14, 2026 / Updated: October 1, 2026
Vulnerability identifier: #VU142541
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-103278
CWE-ID: CWE-23
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to take over a staff user's account.
The vulnerability exists due to relative path traversal in the admin iframe when processing published content. A remote user can publish a malicious page to take over a staff user's account.
User interaction is required for an active staff user to visit the malicious page.
Affected software
Ghost
How to mitigate CVE-2026-103278
Install security update from vendor's website.
Ghost - update to 6.34.0