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.
PoC: 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.
PoC: CVE-2025-48827
Vbullettin RCE - CVE-2025-48827
PoC: CVE-2025-48827
Critical Unauthenticated API Access in vBulletin
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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