CVE-2021-42048
4.8
MEDIUM
CVSS 3.1
EPSS 0.22%
Description
An issue was discovered in the Growth extension in MediaWiki through 1.36.2. Any admin can add arbitrary JavaScript code to the Newcomer home page footer, which can be executed by viewers with zero edits.
How to fix CVE-2021-42048
To remediate CVE-2021-42048, upgrade the affected package to a fixed version below.
- Bitnami/mediawiki—upgrade to 1.36.3 or later
Is CVE-2021-42048 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.36.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |