oiyl/CVE-2025-46171

oiyl/CVE-2025-46171

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Writeup of a Denial of Service vulnerability in the vBulletin 3.8.7 friends list.
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CVE History

CVEPublishedCVSS v3CVSS v2
CVE-2025-46171↗
5.4 MEDIUM—

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.