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
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.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| movable_type | movable_type | 7 |
| movable_type | movable_type | 8.4 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-434 | The product allows the upload or transfer of dangerous file types that are automatically processed within its environment. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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).
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know
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