CVE-2020-35474
6.1
MEDIUM
CVSS 3.1
EPSS 0.47%
Description
In MediaWiki before 1.35.1, the combination of Html::rawElement and Message::text leads to XSS because the definition of MediaWiki:recentchanges-legend-watchlistexpiry can be changed onwiki so that the output is raw HTML.
How to fix CVE-2020-35474
To remediate CVE-2020-35474, upgrade the affected package to a fixed version below.
- Bitnami/mediawiki—upgrade to 1.35.1 or later
- Debian/mediawiki—upgrade to 1:1.35.1-1 or later
Is CVE-2020-35474 being exploited?
Low — EPSS is 0.5%, 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 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References (5)
- ADVISORYsecurity-tracker.debian.org/tracker/CVE-2020-35474
- WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
- WEBlists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
- WEBnvd.nist.gov/vuln/detail/CVE-2020-35474