CVE-2020-35480
Fixed in a distro release EPSS 1%
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.
Products: mediawiki, debian_linux, fedoraproject fedora
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Arch Linux | mediawiki | 1.35.1-1 |
| Debian 10 | mediawiki | 1:1.31.12-1~deb10u1 |
| Debian 12 | mediawiki | 1:1.35.1-1 |
| Debian 13 | mediawiki | 1:1.35.1-1 |
| Debian 14 | mediawiki | 1:1.35.1-1 |
| Debian 9 | mediawiki | 1:1.27.7-1~deb9u7 |
| Ubuntu 18.04 LTS | mediawiki | no fix |
| Ubuntu 25.10 | mediawiki | no fix |
| Ubuntu 26.04 LTS | mediawiki | no fix |
| Ubuntu 26.10 | mediawiki | no fix |
| Ubuntu Pro 20.04 LTS | mediawiki | no fix |
| Ubuntu Pro 22.04 LTS | mediawiki | no fix |
| Ubuntu Pro 24.04 LTS | mediawiki | no fix |