# CVE-2021-25019: SEO Plugin by Squirrly SEO < 11.1.12 - Reflected Cross-Site Scripting

> Attackers can inject malicious scripts into admin pages via the type parameter, potentially compromising administrator accounts.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Mar 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-7xm8-fw8m-2w46

## What is CVE-2021-25019?

CVE-2021-25019 is a medium-severity cross-site scripting vulnerability in Unknown SEO Plugin by Squirrly SEO, published on 21 Mar 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The SEO Plugin by Squirrly SEO WordPress plugin before 11.1.12 does not escape the type parameter before outputting it back in an attribute in an admin page, leading to a Reflected Cross-Site Scripting

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

## Which versions are affected by CVE-2021-25019?

It affects 1 product.


Products: Squirrly Seo Plugin by Squirrly Seo.

## How do I fix CVE-2021-25019?

No fix has been published for CVE-2021-25019 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-25019 being exploited?

There is no known exploitation of CVE-2021-25019 in the wild and no public exploit code.

## Other vulnerabilities in Unknown SEO Plugin by Squirrly SEO

- [CVE-2024-6497](https://insights.sbomify.com/CVE-2024-6497/): SEO Plugin by Squirrly SEO <= 12.3.19 - Authenticated (Contributor+) SQL Injection via url Parameter (high 8.8)
- [CVE-2025-22783](https://insights.sbomify.com/CVE-2025-22783/): WordPress SEO Plugin by Squirrly SEO plugin <= 12.4.03 - SQL Injection vulnerability (high 8.5)
- [CVE-2024-43286](https://insights.sbomify.com/CVE-2024-43286/): WordPress Squirrly SEO plugin <= 12.3.19 - SQL Injection vulnerability (high 8.5)
- [CVE-2023-50854](https://insights.sbomify.com/CVE-2023-50854/): WordPress Squirrly SEO - Advanced Pack Plugin <= 2.3.8 is vulnerable to SQL Injection (high 7.6)
- [CVE-2022-38140](https://insights.sbomify.com/CVE-2022-38140/): WordPress SEO Plugin by Squirrly SEO Plugin <= 12.1.10 is vulnerable to Arbitrary File Upload (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-25019 and fix it if it is affected.

What it is: CVE-2021-25019 is a medium-severity cross-site scripting vulnerability in Unknown SEO Plugin by Squirrly SEO, published on 21 Mar 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-25019 in the wild and no public exploit code.

Affected product: Unknown SEO Plugin by Squirrly SEO. 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-2021-25019/ (Markdown: https://insights.sbomify.com/CVE-2021-25019/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-25019
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-25019
- OSV: https://osv.dev/vulnerability/CVE-2021-25019

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-25019/
Summaries are generated and may contain mistakes; the official description above is the record.