CVE-2021-30156
4.3
MEDIUM
CVSS 3.1
EPSS 0.19%
Description
An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a "hidden" user exists.
How to fix CVE-2021-30156
To remediate CVE-2021-30156, upgrade the affected package to a fixed version below.
- Bitnami/mediawiki—upgrade to 1.31.12 or later
Is CVE-2021-30156 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.31.12, >= 1.32.0, < 1.35.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |