Cross-site scripting in Ghost - CVE-2026-24778
Published: April 27, 2026
Vulnerability identifier: #VU128206
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2026-24778
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Ghost
Affected software:
Ghost
Ghost
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary JavaScript in the victim's browser.
The vulnerability exists due to cross-site scripting in Portal preview links when handling crafted links. A remote attacker can send a specially crafted link to execute arbitrary JavaScript in the victim's browser.
User interaction is required, and the link must be accessed by an authenticated staff user or member.
How to mitigate CVE-2026-24778
Install security update from vendor's website.