# CVE-2021-24324: 404 SEO Redirection <= 1.3 - CSRF to Stored Cross-Site Scripting (XSS)

> Attackers can trick logged-in users into changing plugin settings and injecting malicious scripts due to missing CSRF checks and sanitization.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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:** 17 May 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-x587-fjx5-36pw

## What is CVE-2021-24324?

CVE-2021-24324 is a medium-severity vulnerability in Unknown 404 SEO Redirection, published on 17 May 2021. 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 404 SEO Redirection WordPress plugin through 1.3 is lacking CSRF checks in all its settings, allowing attackers to make a logged in user change the plugin's settings. Due to the lack of sanitisation and escaping in some fields, it could also lead to Stored Cross-Site Scripting issues

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2021-24324?

It affects 1 product.


Products: Clogica All 404 Redirect to Homepage.

## How do I fix CVE-2021-24324?

No fix has been published for CVE-2021-24324 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24324 being exploited?

There is no known exploitation of CVE-2021-24324 in the wild and no public exploit code.

## Other vulnerabilities in Unknown 404 SEO Redirection

- [CVE-2021-24326](https://insights.sbomify.com/CVE-2021-24326/): All 404 Redirect to Homepage < 1.21 - Authenticated Reflected Cross-Site Scripting (XSS) (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24324 and fix it if it is affected.

What it is: CVE-2021-24324 is a medium-severity vulnerability in Unknown 404 SEO Redirection, published on 17 May 2021. 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-2021-24324 in the wild and no public exploit code.

Affected product: Unknown 404 SEO Redirection. 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-2021-24324/ (Markdown: https://insights.sbomify.com/CVE-2021-24324/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24324
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24324
- OSV: https://osv.dev/vulnerability/CVE-2021-24324

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24324/
Summaries are generated and may contain mistakes; the official description above is the record.