Code Injection in Six Apart Ltd products - CVE-2026-25776
Published: April 8, 2026
Vulnerability identifier: #VU125192
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-25776
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Six Apart Ltd
Affected software:
Movable Type
Movable Type Advanced
Movable Type Premium
Movable Type Premium (Advanced Edition)
Movable Type Premium (MT8-based)
Movable Type
Movable Type Advanced
Movable Type Premium
Movable Type Premium (Advanced Edition)
Movable Type Premium (MT8-based)
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in the filtering process of the Listing Framework. A remote attacker can send a specially crafted Perl script and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2026-25776
Install updates from vendor's website.