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Case File

CVE-2021-43309

MEDIUM · CVSS 5.9 EPSS 0.87% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-08-24 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.9. Public exploit code or proof-of-concept references have been detected in its references. It may lead to a denial-of-service condition.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2021-43309
Severity
MEDIUM
CVSS
5.9
EPSS
0.87%

Original NVD Description

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the uri-template-lite npm package, when an attacker is able to supply arbitrary input to the "URI.expand" method