CVE-2019-18611

MEDIUM

MediaWiki CheckUser <1.34 - Info Disclosure

Title source: llm
STIX 2.1

Description

An issue was discovered in the CheckUser extension through 1.34 for MediaWiki. Certain sensitive information within oversighted edit summaries made available via the MediaWiki API was potentially visible to users with various levels of access to this extension. Said users should not have been able to view these oversighted edit summaries via the MediaWiki API.

References (2)

Core 2
Core References
Patch, Vendor Advisory x_refsource_misc
https://phabricator.wikimedia.org/T234862

Scores

CVSS v3 6.5
EPSS 0.0034
EPSS Percentile 56.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-200
Status published
Products (1)
mediawiki/checkuser < 1.34
Published Oct 29, 2019
Tracked Since Feb 18, 2026