CVE-2026-25776 Code injection in Movable Type

What is CVE-2026-25776?

CVE-2026-25776 is a critical code injection vulnerability in Six Apart Ltd. Movable Type, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-94

Which versions are affected by CVE-2026-25776?

It affects 1 product.

Products include Sixapart Movable Type.

How do I fix CVE-2026-25776?

No fix has been published for CVE-2026-25776 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-25776 being exploited?

There is no known exploitation of CVE-2026-25776 in the wild and no public exploit code.

Other vulnerabilities in Six Apart Ltd. Movable Type

• CVE-2009-0752 Other in n/a Critical 10.0
• CVE-2022-38078 Command injection in Movable Type XMLRPC API Critical 9.8
• CVE-2021-20837 Command injection in Movable Type Critical 9.8
• CVE-2016-5742 SQL injection in n/a Critical 9.8
• CVE-2020-5576 Cross-site request forgery in Movable Type High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mx97-3vf8-2r7p.