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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...

10.0 CVSS

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.

Classification

CVE ID: CVE-2025-48827

CVSS Base Severity: CRITICAL

CVSS Base Score: 10.0

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

Problem Types

CWE-424 Improper Protection of Alternate Path

Affected Products

Vendor: vBulletin

Product: vBulletin

Exploit Prediction Scoring System (EPSS)

EPSS Score: 10.65% (probability of being exploited)

EPSS Percentile: 92.94% (scored less or equal to compared to others)

EPSS Date: 2025-06-23 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-48827
https://karmainsecurity.com/dont-call-that-protected-method-vbulletin-rce

Timeline