CVE-2020-35480
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Mediawiki
PublishedDec 18, 2020
First seenDec 18, 2020
How to fix
Update
- mediawiki mediawiki1.35.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediawiki mediawiki | v < 1.35.1 | 1.35.1 |
| debian debian_linux | 9.0, 10.0 | — |
| fedoraproject fedora | 33 | — |
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