# CVE-2021-24425: myStickymenu < 2.5.2 - Authenticated Stored XSS

> Authenticated high-privilege users can inject malicious JavaScript into the myStickymenu plugin settings, leading to stored XSS on the blog front-end.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Aug 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-fc78-8j4r-qq56

## What is CVE-2021-24425?

CVE-2021-24425 is a medium-severity cross-site scripting vulnerability in Unknown Floating Notification Bar, Sticky Menu on Scroll, and Sticky Header for Any Theme – myStickymenu, published on 2 Aug 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The Floating Notification Bar, Sticky Menu on Scroll, and Sticky Header for Any Theme – myStickymenu WordPress plugin before 2.5.2 does not sanitise or escape its Bar Text settings, allowing hight privilege users to use malicious JavaScript in it, leading to a Stored Cross-Site Scripting issue, which will be triggered in the plugin's setting, as well as all front-page of the blog (when the Welcome bar is active)

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

## Which versions are affected by CVE-2021-24425?

It affects 1 product.


Products: Premio Mystickymenu.

## How do I fix CVE-2021-24425?

No fix has been published for CVE-2021-24425 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24425 being exploited?

There is no known exploitation of CVE-2021-24425 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Floating Notification Bar, Sticky Menu on Scroll, and Sticky Header for Any Theme – myStickymenu

- [CVE-2023-5509](https://insights.sbomify.com/CVE-2023-5509/): myStickymenu < 2.6.5 - Subscriber+ Arbitrary Form Leads Deletion (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24425 and fix it if it is affected.

What it is: CVE-2021-24425 is a medium-severity cross-site scripting vulnerability in Unknown Floating Notification Bar, Sticky Menu on Scroll, and Sticky Header for Any Theme – myStickymenu, published on 2 Aug 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24425 in the wild and no public exploit code.

Affected product: Unknown Floating Notification Bar, Sticky Menu on Scroll, and Sticky Header for Any Theme – myStickymenu. 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-2021-24425/ (Markdown: https://insights.sbomify.com/CVE-2021-24425/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24425
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24425
- OSV: https://osv.dev/vulnerability/CVE-2021-24425

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-24425/
Summaries are generated and may contain mistakes; the official description above is the record.