# CVE-2022-4417: WP Cerber < 9.3.3 - User Enumeration Bypass via Rest API

> Attackers can bypass user enumeration restrictions in WP Cerber plugin when the blog is in a subdirectory, exposing user lists.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:** 2 Jan 2023
- **Updated:** 10 Apr 2025
- **Also known as:** GHSA-cp43-7gjw-vj3h

## What is CVE-2022-4417?

CVE-2022-4417 is a medium-severity vulnerability in Unknown WP Cerber Security, Anti-spam & Malware Scan, published on 2 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The WP Cerber Security, Anti-spam & Malware Scan WordPress plugin before 9.3.3 does not properly block access to the REST API users endpoint when the blog is in a subdirectory, which could allow attackers to bypass the restriction in place and list users

## Which versions are affected by CVE-2022-4417?

It affects 1 product.


Products: Cerber Wp Cerber Security\, Anti-Spam \& Malware Scan.

## How do I fix CVE-2022-4417?

No fix has been published for CVE-2022-4417 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4417 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4417 exists.

## Other vulnerabilities in Unknown WP Cerber Security, Anti-spam & Malware Scan

- [CVE-2022-4712](https://insights.sbomify.com/CVE-2022-4712/): WP Cerber Security <= 9.1 - Unauthenticated Stored Cross-Site Scripting (high 7.2)
- [CVE-2022-0429](https://insights.sbomify.com/CVE-2022-0429/): WP Cerber Security, Anti-spam & Malware Scan < 8.9.6 - Unauthenticated Stored Cross-Site Scripting (medium 6.1)
- [CVE-2022-2939](https://insights.sbomify.com/CVE-2022-2939/): WP Cerber Security <= 9.0 - User Enumeration Bypass (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4417 and fix it if it is affected.

What it is: CVE-2022-4417 is a medium-severity vulnerability in Unknown WP Cerber Security, Anti-spam & Malware Scan, published on 2 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4417 exists.

Affected product: Unknown WP Cerber Security, Anti-spam & Malware Scan. 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-2022-4417/ (Markdown: https://insights.sbomify.com/CVE-2022-4417/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4417
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4417
- OSV: https://osv.dev/vulnerability/CVE-2022-4417

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-4417/
Summaries are generated and may contain mistakes; the official description above is the record.