CVEvulnerability
CVE-2020-35480
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-12-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-203
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.
Affected configurations
• mediawiki mediawiki (< 1.35.1)
• debian debian linux 9.0
• debian debian linux 10.0
• fedoraproject fedora 33
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/ lists.fedoraproject.org
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html Mailing List, Release Notes, Vendor Advisory
- https://phabricator.wikimedia.org/T120883 Permissions Required
- https://www.debian.org/security/2020/dsa-4816 Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/ lists.fedoraproject.org
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html Mailing List, Release Notes, Vendor Advisory
- https://phabricator.wikimedia.org/T120883 Permissions Required
- https://www.debian.org/security/2020/dsa-4816 Mailing List, Third Party Advisory