CVE-2026-23704
Unknown Unknown - Not Provided

Stored XSS via Malicious File Upload in Movable Type Admin Panel

Publication date: 2026-02-04

Last updated on: 2026-02-04

Assigner: JPCERT/CC

Description
A non-administrative user can upload malicious files. When an administrator or the product accesses that file, an arbitrary script may be executed on the administrator's browser. Note that Movable Type 7 series and 8.4 series, which are End-of-Life (EOL), are affected by the vulnerability as well.

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Meta Information

Published
2026-02-04
Last Modified
2026-02-04
Generated
2026-07-26
AI Q&A
2026-02-04
EPSS Evaluated
2026-07-25
NVD
CVE-2026-23704
EUVD
EUVD-2026-5489

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
movable_type movable_type 7
movable_type movable_type 8.4

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-434 The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

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Executive Summary

This vulnerability allows a non-administrative user to upload malicious files. When an administrator or the product accesses these files, an arbitrary script may be executed on the administrator's browser.

It affects Movable Type 7 series and 8.4 series, including versions that are End-of-Life (EOL).

Detection Guidance

I don't know

Impact Analysis

The vulnerability can lead to arbitrary script execution on an administrator's browser, potentially allowing attackers to perform unauthorized actions or gain control over administrative functions.

Compliance Impact

I don't know

Mitigation Strategies

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