CVE-2025-48827: vbulletin — Exploit

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.

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CVSS v3.1 Score

10.0

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-424 CWE-424

Affected Products

Vendor	Product	Versions
vbulletin	vbulletin	5.0.0 — 5.7.5
vbulletin	vbulletin	6.0.0 — 6.0.3

References

Exploits

https://karmainsecurity.com/dont-call-that-protected-method-vbulletin-rce

Other References

https://kevintel.com/CVE-2025-48827 https://blog.kevintel.com/vbulletin-replaceadtemplate-kev/

Frequently Asked Questions

What is 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 on PHP 8.1 or later, as demonstrated by the /api.php?method=protectedMethod pattern, as exploited in the wild in May 2025. It has a CVSS v3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2025-48827? +

CVE-2025-48827 has a CVSS v3.1 score of 10.0 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-48827? +

CVE-2025-48827 affects products from vbulletin, specifically: vbulletin. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-48827? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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