CVE-2023-29139

MEDIUM

MediaWiki < 1.39.3 - Denial of Service via CheckUserLog API Request Flood

Title source: llm

Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. When a user with checkuserlog permissions makes many CheckUserLog API requests in some configurations, denial of service can occur (RequestTimeoutException or upstream request timeout).

References (1)

Core 1

Core References

Patch

https://phabricator.wikimedia.org/T326293

Scores

CVSS v3 6.5

EPSS 0.0016

EPSS Percentile 36.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-400

Status published

Products (1)

mediawiki/mediawiki < 1.39.3

Published Mar 31, 2023

Tracked Since Feb 18, 2026