# CVE-2022-4539: Web Application Firewall <= 2.1.2 - IP Address Spoofing to Protection Mechanism Bypass

> Attackers can bypass IP-based login restrictions in the Web Application Firewall plugin by spoofing the X-Forwarded-For header.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Aug 2024
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-9p7x-652m-pw9q

## What is CVE-2022-4539?

CVE-2022-4539 is a medium-severity vulnerability in cyberlord92 Web Application Firewall – website security, published on 31 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Web Application Firewall plugin for WordPress is vulnerable to IP Address Spoofing in versions up to, and including, 2.1.2. This is due to insufficient restrictions on where the IP Address information is being retrieved for request logging and login restrictions. Attackers can supply the X-Forwarded-For header with with a different IP Address that will be logged and can be used to bypass settings that may have blocked out an IP address or country from logging in.

Weakness: CWE-345 (Insufficient Verification of Data Authenticity), CWE-348 (Use of Less Trusted Source)

## Which versions are affected by CVE-2022-4539?

It affects 1 product.


Products: Miniorange Web Application Firewall.

## How do I fix CVE-2022-4539?

No fix has been published for CVE-2022-4539 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4539 being exploited?

There is no known exploitation of CVE-2022-4539 in the wild and no public exploit code.

Public exploit code:

- https://github.com/Abdurahmon3236/CVE-2022-4539 (github_poc): https://github.com/Abdurahmon3236/CVE-2022-4539

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4539 and fix it if it is affected.

What it is: CVE-2022-4539 is a medium-severity vulnerability in cyberlord92 Web Application Firewall – website security, published on 31 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-4539 in the wild and no public exploit code.

Affected product: cyberlord92 Web Application Firewall – website security. 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-2022-4539/ (Markdown: https://insights.sbomify.com/CVE-2022-4539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4539
- OSV: https://osv.dev/vulnerability/CVE-2022-4539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-4539/
Summaries are generated and may contain mistakes; the official description above is the record.