# CVE-2025-7362: MsUpload: Stored Cross-Site Scripting (XSS) via unsanitized msu-continue system message

> Attackers can inject malicious scripts via unsanitized upload messages, potentially hijacking user sessions in MediaWiki installations using the MsUpload extension.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 8 Jul 2025
- **Updated:** 10 Jul 2025
- **Also known as:** GHSA-pqmg-6grf-rg8c

## What is CVE-2025-7362?

CVE-2025-7362 is a medium-severity cross-site scripting vulnerability in Wikimedia Foundation Mediawiki - MsUpload extension, published on 8 Jul 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The MsUpload extension for MediaWiki is vulnerable to stored XSS via the msu-continue system message, which is inserted into the DOM without proper sanitization. The vulnerability occurs in the file upload UI when the same filename is uploaded twice.

This issue affects Mediawiki - MsUpload extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-7362?


## How do I fix CVE-2025-7362?

No fix has been published for CVE-2025-7362 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-7362 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7362 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-7362 and fix it if it is affected.

What it is: CVE-2025-7362 is a medium-severity cross-site scripting vulnerability in Wikimedia Foundation Mediawiki - MsUpload extension, published on 8 Jul 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7362 exists.

Affected product: Wikimedia Foundation Mediawiki - MsUpload extension. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-7362/ (Markdown: https://insights.sbomify.com/CVE-2025-7362/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-7362
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-7362
- OSV: https://osv.dev/vulnerability/CVE-2025-7362

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-7362/
Summaries are generated and may contain mistakes; the official description above is the record.