AUGUST 4, 2026
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Case File

CVE-2021-31550

MEDIUM · CVSS 5.4 EPSS 0.45%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-04-22 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.4. See the original NVD description below for full technical details.

CVE
CVE-2021-31550
Severity
MEDIUM
CVSS
5.4
EPSS
0.45%

Original NVD Description

An issue was discovered in the CommentBox extension for MediaWiki through 1.35.2. Via crafted configuration variables, a malicious actor could introduce XSS payloads into various layers.

Related CVEs

Other vulnerabilities affecting the same vendor(s)