# CVE-2025-13533: Cross-site scripting in CSS & JavaScript Toolbox

> Administrators can inject arbitrary scripts via Assignment Engine fields, leading to stored XSS in the admin dashboard.

- **Severity:** Medium 4.4 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-6jx6-9xqq-pg98

## What is CVE-2025-13533?

CVE-2025-13533 is a medium-severity cross-site scripting vulnerability in wipeoutmedia CSS & JavaScript Toolbox, published on 18 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

The CSS & JavaScript Toolbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 12.0.6 via the Assignment Engine fields. This is due to insufficient input sanitization and output escaping on assignment data fields including Expressions, URLs, and Advanced assignment data. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the CJT block edit screen in the admin dashboard.

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

## Which versions are affected by CVE-2025-13533?


## How do I fix CVE-2025-13533?

No fix has been published for CVE-2025-13533 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-13533 being exploited?

There is no known exploitation of CVE-2025-13533 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13533 and fix it if it is affected.

What it is: CVE-2025-13533 is a medium-severity cross-site scripting vulnerability in wipeoutmedia CSS & JavaScript Toolbox, published on 18 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-13533 in the wild and no public exploit code.

Affected product: wipeoutmedia CSS & JavaScript Toolbox. 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-2025-13533/ (Markdown: https://insights.sbomify.com/CVE-2025-13533/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13533
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13533
- OSV: https://osv.dev/vulnerability/CVE-2025-13533

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-13533/
Summaries are generated and may contain mistakes; the official description above is the record.