# CVE-2025-9430: mtons mblog update cross site scripting

> Remote attackers can inject malicious scripts via the admin options update endpoint, potentially compromising user sessions and data.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 Aug 2025
- **Updated:** 26 Aug 2025
- **Also known as:** GHSA-3q6c-gxc3-h5vx

## What is CVE-2025-9430?

CVE-2025-9430 is a medium-severity cross-site scripting vulnerability in mtons mblog, published on 26 Aug 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A vulnerability was detected in mtons mblog up to 3.5.0. This issue affects some unknown processing of the file /admin/options/update. The manipulation of the argument input results in cross site scripting. It is possible to launch the attack remotely. The exploit is now public and may be used.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-9430?

It affects 1 product.


Products: Mtons Mblog.

## How do I fix CVE-2025-9430?

No fix has been published for CVE-2025-9430 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-9430 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9430 exists.

## Other vulnerabilities in mtons mblog

- [CVE-2024-28713](https://insights.sbomify.com/CVE-2024-28713/): File upload in n/a (critical 9.8)
- [CVE-2025-9004](https://insights.sbomify.com/CVE-2025-9004/): mtons mblog password excessive authentication (medium 6.3)
- [CVE-2025-9005](https://insights.sbomify.com/CVE-2025-9005/): mtons mblog register information exposure (medium 6.3)
- [CVE-2025-8927](https://insights.sbomify.com/CVE-2025-8927/): mtons mblog Verification Code send_code excessive authentication (medium 6.3)
- [CVE-2024-13198](https://insights.sbomify.com/CVE-2024-13198/): langhsu Mblog Blog System login observable response discrepancy (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-9430 and fix it if it is affected.

What it is: CVE-2025-9430 is a medium-severity cross-site scripting vulnerability in mtons mblog, published on 26 Aug 2025. An attacker needs administrator access to exploit it, 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-2025-9430 exists.

Affected product: mtons mblog. 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-2025-9430/ (Markdown: https://insights.sbomify.com/CVE-2025-9430/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-9430
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-9430
- OSV: https://osv.dev/vulnerability/CVE-2025-9430

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-9430/
Summaries are generated and may contain mistakes; the official description above is the record.