What is CVE-2026-105644?

CVE-2026-105644 is a medium-severity vulnerability in Tryghost Ghost, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-05.

How severe is CVE-2026-105644?

Medium severity. CVSS v3 base score is 6.8 out of 10.

XSS in Tryghost Ghost

CVE-2026-105644

Ghost is a Node.js content management system. From 4.0.0 until 6.67.0, SVG images included in content imports were stored without sanitization. An attacker who convinced an Administrator to import a crafted file could host scripts on the site's domain, possibly resulting in compromise of staff users' admin sessions. This issue is fixed in version 6.67.0.

Vulnerability class: XSS (Cross-Site Scripting)

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

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/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 >= 4.0.0, < 6.67.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-105644?: CVE-2026-105644 is a medium-severity vulnerability in Tryghost Ghost, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-05.
How severe is CVE-2026-105644?: Medium severity. CVSS v3 base score is 6.8 out of 10.