CVE-2020-35480
5.3
MEDIUM
CVSS 3.1
EPSS 0.34%
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.
How to fix CVE-2020-35480
To remediate CVE-2020-35480, upgrade the affected package to a fixed version below.
- —upgrade to 1.35.1 or later
- —upgrade to 1:1.35.1-1 or later
Is CVE-2020-35480 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.35.1
- from 0, < 1:1.35.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
References (7)
- ADVISORYsecurity-tracker.debian.org/tracker/CVE-2020-35480
- WEBlists.debian.org/debian-lts-announce/2020/12/msg00034.html
- WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
- WEBlists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html