Stored cross-site scripting in Six Apart Ltd products - CVE-2025-22888
Published: February 19, 2025
Vulnerability identifier: #VU104050
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-22888
CWE-ID: CWE-79
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
Movable Type Cloud Edition
Movable Type Premium Cloud Edition
Movable Type
Movable Type Advanced
Movable Type Premium
Movable Type Premium Advanced
Movable Type Cloud Edition
Movable Type Premium Cloud Edition
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in the custom block edit page of MT Block Editor. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
How to mitigate CVE-2025-22888
Install updates from vendor's website.