AUGUST 4, 2026
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Case File

CVE-2021-27884

MEDIUM · CVSS 5.1 EPSS 0.34% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-01 · 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 ↗ securitylab.github.com ↗

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

CVE
CVE-2021-27884
Severity
MEDIUM
CVSS
5.1
EPSS
0.34%

Original NVD Description

Weak JSON Web Token (JWT) signing secret generation in YMFE YApi through 1.9.2 allows recreation of other users' JWT tokens. This occurs because Math.random in Node.js is used.