Main Vulnerability Database Vulnerabilities #VU117532

Stored cross-site scripting in Six Apart Ltd products - CVE-2025-62499

Published: October 22, 2025

Vulnerability identifier: #VU117532

CSH Severity: Low

CVSS v4: 5.1 [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]

CVE-ID: CVE-2025-62499

CWE-ID: CWE-79

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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 Edit CategorySet of ContentType page. 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.

Affected software

Movable Type
Movable Type Premium (Advanced Edition)
Movable Type Advanced
Movable Type Cloud Edition
Movable Type Premium
Movable Type Premium Cloud Edition

How to mitigate CVE-2025-62499

Install updates from vendor's website.

Movable Type - addressed in versions r.5510, 8.0.8, 8.4.4, 8.8.0
Movable Type Premium (Advanced Edition) - addressed in versions 1.68, 2.11
Movable Type Advanced - addressed in versions r.5510, 8.0.8, 8.4.4, 8.8.0
Movable Type Cloud Edition - addressed in versions r.5510, 8.8.0
Movable Type Premium - addressed in versions 1.68, 2.11
Movable Type Premium Cloud Edition - addressed in versions 1.68, 2.11

External References

https://jvn.jp/en/jp/JVN24333679/index.html

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