CVE-2025-48827 is a critical authentication bypass vulnerability affecting vBulletin versions 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 when running on PHP 8.1 or later. This flaw allows unauthenticated attackers to invoke protected API controller methods, as demonstrated by the /api.php?method=protectedMethod pattern. With a CVSS score of 9.8 (CRITICAL), this vulnerability poses a severe risk, enabling full compromise of confidentiality, integrity, and availability without user interaction or complex attack conditions. This vulnerability is actively being exploited in the wild, with exploit code available in Metasploit and Nuclei templates, and has garnered significant community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.0.0, <= 5.7.5CPE matchmatch criteria | cpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:* | ||
>= 6.0.0, <= 6.0.3CPE matchmatch criteria | cpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.