Movable Type contains a stored cross-site scripting vulnerability in Edit ContentData 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 ContentData page.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Six Apart
  • Movable Type

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References
Link Providers
https://jvn.jp/en/jp/JVN24333679/ cve-icon cve-icon
https://movabletype.org/news/2025/10/mt-880-released.html cve-icon cve-icon
https://www.sixapart.jp/movabletype/news/2025/10/22-1055.html cve-icon cve-icon
History

Thu, 23 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 23 Oct 2025 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Six Apart
Six Apart movable Type
Vendors & Products Six Apart
Six Apart movable Type

Thu, 23 Oct 2025 04:30:00 +0000

Type Values Removed Values Added
Description Movable Type contains a stored cross-site scripting vulnerability in Edit ContentData 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 ContentData page.
Weaknesses CWE-79
References
Metrics cvssV3_0

{'score': 4.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 4.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published: 2025-10-23T04:10:30.545Z

Updated: 2025-10-23T15:18:25.113Z

Reserved: 2025-10-16T00:31:56.364Z

Link: CVE-2025-54856

cve-icon Vulnrichment

Updated: 2025-10-23T15:15:09.522Z

cve-icon NVD

Status : Received

Published: 2025-10-23T05:15:32.583

Modified: 2025-10-23T05:15:32.583

Link: CVE-2025-54856

cve-icon Redhat

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