Description

An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.

Remediation

References

CVE-2020-35480

Related Vulnerabilities

PostgreSQL Permissions, Privileges, and Access Controls Vulnerability (CVE-2016-0766)

WordPress 'xmlrpc.php' Remote Security Bypass Vulnerability (3.0.1 - 3.0.2)

WordPress Plugin Request a Quote Cross-Site Scripting (2.3.3)

Apache Traffic Server Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') Vulnerability (CVE-2021-27577)

WordPress Plugin WolfNet IDX for WordPress Multiple Unspecified Vulnerabilities (1.14.7)

Severity

Medium

Classification

CVE-2020-35480 CWE-200 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Tags

Missing Update Known Vulnerabilities