CVE-2025-46171

PoC —

CVSS 3.1

5.4 medium

EPSS

<1%p18

Published

Jul 23, 2025 (Jul 23, 2025)

Modified

Jul 5, 2026

Description

vBulletin 3.8.7 is vulnerable to a denial-of-service condition via the misc.php?do=buddylist endpoint. If an authenticated user has a sufficiently large buddy list, processing the list can consume excessive memory, exhausting system resources and crashing the forum.

Vendors: vbulletin
Products: vbulletin
Weakness: CWE-400
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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