The Movable Type content management system by Six Apart Ltd. contains an SQL Injection vulnerability identified as CVE-2026-33088 affecting versions 9.1.0 and earlier. This vulnerability arises from improper neutralization of special elements used in SQL commands, which may allow unauthenticated attackers to execute arbitrary SQL statements against the backend database. The CVSS 3.0 base score is 7.3, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available, and the product is not a cloud service, so remediation depends on vendor updates or user-applied fixes.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL commands on the Movable Type backend database, potentially leading to unauthorized data disclosure, modification, or deletion. This compromises the confidentiality, integrity, and availability of the affected system. However, there are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor Six Apart Ltd. communications for updates. Until a patch is available, consider restricting access to the affected application and applying any recommended workarounds from the vendor once published.