CVE-2021-31548

MEDIUM

MediaWiki < 1.35.2 - Incorrect Authorization in AbuseFilter Extension

Title source: llm

Description

An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. A MediaWiki user who is partially blocked or was unsuccessfully blocked could bypass AbuseFilter and have their edits completed.

References (2)

Core 2

Core References

Third Party Advisory x_refsource_misc

https://phabricator.wikimedia.org/T272333

Issue Tracking, Third Party Advisory x_refsource_misc

https://gerrit.wikimedia.org/r/q/Ifac795125927d584a31d95e1b4c4241eef860fa1

Scores

CVSS v3 6.5

EPSS 0.0011

EPSS Percentile 28.9%

Attack Vector NETWORK

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

Details

CWE

CWE-863

Status published

Products (1)

mediawiki/mediawiki < 1.35.2

Published Apr 22, 2021

Tracked Since Feb 18, 2026