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Case File

CVE-2021-33502

HIGH · CVSS 7.5 EPSS 1.70% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-24 · 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 ↗

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

CVE
CVE-2021-33502
Severity
HIGH
CVSS
7.5
EPSS
1.70%

Original NVD Description

The normalize-url package before 4.5.1, 5.x before 5.3.1, and 6.x before 6.0.1 for Node.js has a ReDoS (regular expression denial of service) issue because it has exponential performance for data: URLs.