What is CVE-2026-105651?

CVE-2026-105651 is a high-severity vulnerability in Tryghost Ghost, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-10-05.

How severe is CVE-2026-105651?

High severity. CVSS v3 base score is 7.3 out of 10.

XSS in Tryghost Ghost

CVE-2026-105651

Ghost is a Node.js content management system. From 5.94.0 until 6.64.0, when creating a bookmark card, Ghost could store non-image files fetched from an external website as bookmark icons or thumbnails. This allowed any staff user, including Contributors, to host arbitrary HTML on the site's domain, possibly resulting in compromise of other staff users' admin sessions. This issue is fixed in version 6.64.0.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-05 · last modified 2026-10-06.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Tryghost Ghost — versions >= 5.94.0, < 6.64.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-105651?: CVE-2026-105651 is a high-severity vulnerability in Tryghost Ghost, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-10-05.
How severe is CVE-2026-105651?: High severity. CVSS v3 base score is 7.3 out of 10.