CVE-2026-96408criticalCWE-94

CVE-2026-96408: critical vulnerability in Six Apart Ltd. Movable Type

Published

25Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.3
exploitation probability
—
observed exploitation
nono source reports it
A code injection vulnerability exists in the upgrade script of Movable Type, which may allow an unauthenticated attacker to execute an arbitrary Perl script or an SQL query on the affected product.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Affected products
Six Apart Ltd. · Movable TypeSix Apart Ltd. · Movable Type Cloud EditionSix Apart Ltd. · Movable Type PremiumSix Apart Ltd. · Movable Type Premium Cloud Edition
Related CVEs — Six Apart Ltd. Movable Type

In the same product, most dangerous first.

CVE-2021-20837—CVE-2021-20837EPSS 88.1%CVE-2020-5577—CVE-2020-5577EPSS 1.7%CVE-2020-5574—CVE-2020-5574EPSS 1.2%CVE-2022-43660HIGHCVE-2022-43660EPSS 1.0%CVE-2026-25776CRITICALCVE-2026-25776EPSS 1.0%CVE-2020-5575—CVE-2020-5575EPSS 0.9%
References
https://jvn.jp/en/jp/JVN91153973/https://movabletype.org/news/2026/10/mt-930-released.htmlhttps://www.sixapart.jp/movabletype/news/2026/10/07-1100.html