What is CVE-2026-105678?

CVE-2026-105678 is a medium-severity vulnerability in Tryghost Ghost, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2026-10-05.

How severe is CVE-2026-105678?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Tryghost Ghost

CVE-2026-105678

Ghost is a Node.js content management system. From 0.5.0 until 6.64.0, staff users with the Editor or Super Editor role were able to assign their own role to Author and Contributor users, despite not having permission to assign that role. This issue is fixed in version 6.64.0.

Vulnerability class: Privilege Escalation

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

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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 >= 0.5.0, < 6.64.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-105678?: CVE-2026-105678 is a medium-severity vulnerability in Tryghost Ghost, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2026-10-05.
How severe is CVE-2026-105678?: Medium severity. CVSS v3 base score is 4.3 out of 10.