# CVE-2023-2159: CMP – Coming Soon & Maintenance <= 4.1.7 - Maintenance Mode Bypass

> Attackers can bypass maintenance mode restrictions by guessing the MD5 hash of the site URL, allowing unauthorized access to the site.

- **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:** 9 Jun 2023
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-vw9j-prfj-jvhh

## What is CVE-2023-2159?

CVE-2023-2159 is a medium-severity vulnerability in CMP – Coming Soon & Maintenance Plugin by NiteoThemes, published on 9 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The CMP – Coming Soon & Maintenance plugin for WordPress is vulnerable to Maintenance Mode Bypass in versions up to, and including, 4.1.7. A correct cmp_bypass GET parameter in the URL (equal to the md5-hashed home_url in the default setting) allows users to visit a site placed in maintenance mode thus bypassing the plugin's provided feature.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2023-2159?

It affects 1 product.


Products: Niteothemes Cmp.

## How do I fix CVE-2023-2159?

No fix has been published for CVE-2023-2159 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2159 being exploited?

There is no known exploitation of CVE-2023-2159 in the wild and no public exploit code.

## Other vulnerabilities in CMP – Coming Soon & Maintenance Plugin by NiteoThemes

- [CVE-2020-36730](https://insights.sbomify.com/CVE-2020-36730/): CMP <= 3.8.1 - Missing Authorization (high 8.3)
- [CVE-2022-0188](https://insights.sbomify.com/CVE-2022-0188/): Coming Soon & Maintenance Plugin by NiteoThemes < 4.0.19 - Unauthenticated Arbitrary CSS Update (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2159 and fix it if it is affected.

What it is: CVE-2023-2159 is a medium-severity vulnerability in CMP – Coming Soon & Maintenance Plugin by NiteoThemes, published on 9 Jun 2023. 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-2023-2159 in the wild and no public exploit code.

Affected product: CMP – Coming Soon & Maintenance Plugin by NiteoThemes. 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-2023-2159/ (Markdown: https://insights.sbomify.com/CVE-2023-2159/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2159
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2159
- OSV: https://osv.dev/vulnerability/CVE-2023-2159

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2159/
Summaries are generated and may contain mistakes; the official description above is the record.