PT-2026-6182 · Six Apart · Movable Type

Published 2026-02-04 · Updated 2026-02-04 · CVE-2026-23704

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions Movable Type versions 7.x and 8.4.x

Description A non-administrative user can upload malicious files. When an administrator or the product accesses these files, an arbitrary script may be executed on the administrator's browser.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2026-23704

Affected Products

Movable Type

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-23704 · Security Note
• https://jvn.jp/en/jp/JVN45405689 · Note
• https://movabletype.org/news/2026/02/mt-906-released.html · Note
• https://t.me/CVEtracker/43694 · Telegram Post
• https://sixapart.jp/movabletype/news/2026/02/04-1100.html · Note