Description
Movable Type before 5.2.6 does not properly use the Storable::thaw function, which allows remote attackers to execute arbitrary code via the comment_state parameter.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | movabletype-opensource | 5.1.4+dfsg-4+deb7u2 | DSA-3183-1 |
Advisories 1
- DSA-3183-1 movabletype-opensource - security update Debian Security (DSA / DLA) · Mar 9, 2026