Medium severity · published Jul 23, 2025
CVE-2025-46171
vBulletin 3.8.7 is vulnerable to a denial-of-service condition via the misc.php?do=buddylist endpoint
5.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VB
Vbulletin · Vbulletin
3.8.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-46171
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-46171
Exploit
https://github.com/oiyl/CVE-2025-46171
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