CVE-2021-31547

An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. Its AbuseFilterCheckMatch API reveals suppressed edits and usernames to unprivileged users through the iteration of crafted AbuseFilter rules.

• CWE-200

• https://gerrit.wikimedia.org/r/q/I3f7dbd8b873d411e37c8c3aac2339bf5ec36907dIssue Tracking, Third Party Advisory
• https://gerrit.wikimedia.org/r/q/I4900b1be73323599d74e3164447f81eded094d75Issue Tracking, Third Party Advisory
• https://phabricator.wikimedia.org/T223654Third Party Advisory
• https://gerrit.wikimedia.org/r/q/I3f7dbd8b873d411e37c8c3aac2339bf5ec36907dIssue Tracking, Third Party Advisory
• https://gerrit.wikimedia.org/r/q/I4900b1be73323599d74e3164447f81eded094d75Issue Tracking, Third Party Advisory
• https://phabricator.wikimedia.org/T223654Third Party Advisory

Published

Apr 22, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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