# CVE-2025-48827: vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running


- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 27 May 2025
- **Updated:** 27 May 2025
- **Also known as:** GHSA-23fp-mrfv-cwv4

## What is CVE-2025-48827?

CVE-2025-48827 is a critical vulnerability in Vbulletin Vbulletin, published on 27 May 2025. 

### Official description

vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP 8.1 or later, as demonstrated by the /api.php?method=protectedMethod pattern, as exploited in the wild in May 2025.

Weakness: CWE-424 (Improper Protection of Alternate Path)

## Which versions are affected by CVE-2025-48827?

It affects 1 product.


Products: Vbulletin Vbulletin.

## How do I fix CVE-2025-48827?

No fix has been published for CVE-2025-48827 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-48827 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-48827 exists.

Public exploit code:

- Critical Unauthenticated API Access in vBulletin (github_poc): https://github.com/0xgh057r3c0n/CVE-2025-48827
- This repository contains a proof-of-concept exploit for CVE-2025-48827, a critical authentication bypass vulnerability affecting vBulletin 5.0.0–5.7.5 and 6.0.0–6.0.3 when running on PHP 8.1 or later. The vulnerability allows unauthenticated attackers to invoke protected API methods remotely. (github_poc): https://github.com/sh4den/CVE-2025-48827
- vBulletin replaceAdTemplate Remote Code Execution (metasploit)
- Vbullettin RCE - CVE-2025-48827 (github_poc): https://github.com/wiseep/CVE-2025-48827
- vBulletin 5.0.0-6.0.3 - Authentication Bypass (nuclei): http/cves/2025/CVE-2025-48827.yaml

## Other vulnerabilities in Vbulletin Vbulletin

- [CVE-2020-17496](https://insights.sbomify.com/CVE-2020-17496/): vBulletin PHP Module Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16759](https://insights.sbomify.com/CVE-2019-16759/): vBulletin PHP Module Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2023-25135](https://insights.sbomify.com/CVE-2023-25135/): Deserialization in n/a (critical 9.8)
- [CVE-2020-7373](https://insights.sbomify.com/CVE-2020-7373/): Code injection in n/a (critical 9.8)
- [CVE-2020-12720](https://insights.sbomify.com/CVE-2020-12720/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-48827 and fix it if it is affected.

What it is: CVE-2025-48827 is a critical vulnerability in Vbulletin Vbulletin, published on 27 May 2025. 
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-48827 exists.

Affected product: Vbulletin Vbulletin. 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-2025-48827/ (Markdown: https://insights.sbomify.com/CVE-2025-48827/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-48827
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-48827
- OSV: https://osv.dev/vulnerability/CVE-2025-48827

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-48827/
Summaries are generated and may contain mistakes; the official description above is the record.