Description In MediaWiki through 1.37, blocked IP addresses are allowed to edit EntitySchema items. Remediation References CVE-2021-45471 Related Vulnerabilities WordPress Plugin Simple Share Buttons Adder Multiple Vulnerabilities (4.4) WordPress Plugin Ultimate Member-User Profile, Registration, Login, Member Directory, Content Restriction & Membership Arbitrary File Deletion (1.0.78) IBM RTC Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2019-4747) WordPress Plugin Password Vault Cross-Site Scripting (1.8.2) WordPress Plugin Maps Widget for Google Maps-Google Maps Builder Security Bypass (4.16) Severity Medium Classification CVE-2021-45471 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Tags Missing Update Known Vulnerabilities