What is CVE-2026-103668?

CVE-2026-103668 is a high-severity vulnerability in Six Apart Ltd. Movable Type, classified under SQL Injection. CVSS score: 8.6/10. Published 2026-10-07.

How severe is CVE-2026-103668?

High severity. CVSS v3 base score is 8.6 out of 10.

SQL Injection in Six Apart Ltd. Movable Type

CVE-2026-103668

An SQL Injection vulnerability exists in the Site Search function of Movable Type, which may allow an unauthenticated attacker to execute an arbitrary SQL query on the affected product.

Vulnerability class: SQL Injection

Published 2026-10-07 · last modified 2026-10-07.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.

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

Six Apart Ltd. Movable Type
Six Apart Ltd. Movable Type Premium
Six Apart Ltd. Movable Type Premium Cloud Edition

Weakness classification (CWE)

CWE-89 — SQL Injection

References

movabletype.org/news/2026/10/mt-930-released.html
www.sixapart.jp/movabletype/news/2026/10/07-1100.html
jvn.jp/en/jp/JVN91153973/

Frequently asked questions

What is CVE-2026-103668?: CVE-2026-103668 is a high-severity vulnerability in Six Apart Ltd. Movable Type, classified under SQL Injection. CVSS score: 8.6/10. Published 2026-10-07.
How severe is CVE-2026-103668?: High severity. CVSS v3 base score is 8.6 out of 10.