VULNERABILITY INTELLIGENCE

CVE-2023-45367

CVSS score6.5 MEDIUM

EPSS probability0.66%

CISA KEVNot currently listed

Published2023-10-09

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

An issue was discovered in the CheckUser extension for MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. A user can use a rest.php/checkuser/v0/useragent-clienthints/revision/ URL to store an arbitrary number of rows in cu_useragent_clienthints, leading to a denial of service.

Primary references

cve@mitre.org — Exploit, Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Vendor Advisory