VULNERABILITY INTELLIGENCE

CVE-2021-31554

CVSS score5.4 MEDIUM

EPSS probability0.49%

CISA KEVNot currently listed

Published2021-04-22

Last modified2026-06-17

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

Description

An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It improperly handled account blocks for certain automatically created MediaWiki user accounts, thus allowing nefarious users to remain unblocked.

Weakness classification

nvd@nist.gov: CWE-863

Primary references

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