What’s Vulnerable › Vulnerabilities

CVE-2026-25776

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-08 · updated 2026-07-25
• Weakness: CWE-94

Description

Movable Type provided by Six Apart Ltd. contains a code injection vulnerability which may allow an attacker to execute arbitrary Perl script.

Affected products

• Six Apart Ltd. Movable Type: through 2.14; from 8.0.2 before 8.0.10; from 8.8.0 before 8.8.3; from 9.0.1 before 9.0.7; 9.0.5, 9.0.6, 9.1.0 — fixed in 8.0.10, 8.8.3, 9.0.7

How to fix

Upgrade to a fixed version: Six Apart Ltd. Movable Type 8.0.10, 8.8.3, 9.0.7. Check the vendor advisory for mitigations.

References

• https://jvn.jp/en/jp/JVN66473735/
• https://movabletype.org/news/2026/04/mt-907-released.html
• https://www.sixapart.jp/movabletype/news/2026/04/08-1100.html

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