CVE-2020-35480

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.

References

https://www.debian.org/security/2020/dsa-4816

https://phabricator.wikimedia.org/T120883

https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/

https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3