Medium severity · published Oct 23, 2025
CVE-2025-62499
Movable Type contains a stored cross-site scripting vulnerability in Edit CategorySet of ContentType page
4.8
CVSS
0.2%
EPSS
No
On KEV
Description
Movable Type contains a stored cross-site scripting vulnerability in Edit CategorySet of ContentType page. If crafted input is stored by an attacker with "ContentType Management" privilege, an arbitrary script may be executed on the web browser of the user who accesses Edit CategorySet of ContentType page.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MT
Movable Type (Cloud Edition) · Six Apart Ltd.
8.7.0 (8 series); 7 r.5509 (7 series) · source: vendor
MT
Movable Type (Software Edition) · Six Apart Ltd.
8.4.0 to 8.4.3 (8.4 series); 8.0.0 to 8.0.7 (8.0 series); 7 r.5509 and earlier (7 series) · source: vendor
MT
Movable Type Advanced (Software Edition) · Six Apart Ltd.
8.4.0 to 8.4.3 (8.4 series); 8.0.0 to 8.0.7 (8.0 series); 7 r.5509 and earlier (7 series) · source: vendor
MT
Movable Type Premium (Advanced Edition) (Software Edition) · Six Apart Ltd.
2.10 and earlier (2 series); 1.67 and earlier (1 series) · source: vendor
MT
Movable Type Premium (Cloud Edition) · Six Apart Ltd.
2.10 (2 series); 1.67 (1 series) · source: vendor
MT
Movable Type Premium (Software Edition) · Six Apart Ltd.
2.10 and earlier (2 series); 1.67 and earlier (1 series) · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-62499
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-62499
jvn.jp
https://jvn.jp/en/jp/JVN24333679/
movabletype.org
https://movabletype.org/news/2025/10/mt-880-released.html
www.sixapart.jp
https://www.sixapart.jp/movabletype/news/2025/10/22-1055.html
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