What is CVE-2026-24778?

CVE-2026-24778 is a high-severity vulnerability in Ghost, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-01-27.

How severe is CVE-2026-24778?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Ghost

CVE-2026-24778

Ghost is an open source content management system. In Ghost versions 5.43.0 through 5.12.04 and 6.0.0 through 6.14.0, an attacker was able to craft a malicious link that, when accessed by an authenticated staff user or member, would execut…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (17.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Ghost
Ghost Portal
Tryghost Ghost — versions @tryghost/portal >= 2.29.1, < 2.51.5, @tryghost/portal >= 2.52.0, < 2.57.1, ghost >= 5.43.0, < 5.121.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-24778?: CVE-2026-24778 is a high-severity vulnerability in Ghost, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-01-27.
How severe is CVE-2026-24778?: High severity. CVSS v3 base score is 8.8 out of 10.