# CVE-2025-47479: WordPress WP Compress plugin <= 6.30.30 - Broken Authentication Vulnerability

> Attackers can bypass authentication in the WP Compress plugin to take over accounts, requiring an upgrade to the latest version.

- **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:** 4 Jul 2025
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-5hv5-8328-hrj4

## What is CVE-2025-47479?

CVE-2025-47479 is a medium-severity authentication bypass vulnerability in AresIT WP Compress, published on 4 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Weak Authentication vulnerability in AresIT WP Compress wp-compress-image-optimizer allows Authentication Abuse.This issue affects WP Compress: from n/a through <= 6.30.30.

Weakness: CWE-1390 (Weak Authentication)

## Which versions are affected by CVE-2025-47479?

It affects 1 product.


Products: Wpcompress Wp Compress.

## How do I fix CVE-2025-47479?

No fix has been published for CVE-2025-47479 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-47479 being exploited?

There is no known exploitation of CVE-2025-47479 in the wild and no public exploit code.

## Other vulnerabilities in AresIT WP Compress

- [CVE-2023-6699](https://insights.sbomify.com/CVE-2023-6699/): WP Compress – Image Optimizer [All-In-One] <= 6.10.33 - Unauthenticated Directory Traversal via css (critical 9.1)
- [CVE-2025-2110](https://insights.sbomify.com/CVE-2025-2110/): WP Compress <= 6.30.15 - Authenticated (Subscriber+) Missing Authorization via Multiple Functions (high 8.8)
- [CVE-2024-1934](https://insights.sbomify.com/CVE-2024-1934/): WP Compress – Image Optimizer <= 6.11.08 - Missing Authorization to Unauthenticated CDN Modification (high 7.5)
- [CVE-2025-47546](https://insights.sbomify.com/CVE-2025-47546/): WordPress WP Compress plugin <= 6.30.30 - Cross Site Request Forgery (CSRF) Vulnerability (high 7.1)
- [CVE-2024-47384](https://insights.sbomify.com/CVE-2024-47384/): WordPress WP Compress plugin <= 6.20.13 - Reflected Cross Site Scripting (XSS) vulnerability (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-47479 and fix it if it is affected.

What it is: CVE-2025-47479 is a medium-severity authentication bypass vulnerability in AresIT WP Compress, published on 4 Jul 2025. 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-2025-47479 in the wild and no public exploit code.

Affected product: AresIT WP Compress. 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-2025-47479/ (Markdown: https://insights.sbomify.com/CVE-2025-47479/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-47479
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-47479
- OSV: https://osv.dev/vulnerability/CVE-2025-47479

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-47479/
Summaries are generated and may contain mistakes; the official description above is the record.