CVE-2021-31551
6.1
MEDIUM
CVSS 3.1
EPSS 0.22%
Description
An issue was discovered in the PageForms extension for MediaWiki through 1.35.2. Crafted payloads for Token-related query parameters allowed for XSS on certain PageForms-managed MediaWiki pages.
How to fix CVE-2021-31551
To remediate CVE-2021-31551, upgrade the affected package to a fixed version below.
- Bitnami/mediawiki—upgrade to 1.35.3 or later
Is CVE-2021-31551 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.35.3
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 |