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Case File

CVE-2021-28834

CRITICAL · CVSS 9.8 EPSS 2.80% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-19 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-28834
Severity
CRITICAL
CVSS
9.8
EPSS
2.80%

Original NVD Description

Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.