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Case File

CVE-2021-42136

CRITICAL · CVSS 9 EPSS 4.66% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-04-13 · 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.

External Security References
packetstormsecurity.com ↗

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

CVE
CVE-2021-42136
Severity
CRITICAL
CVSS
9
EPSS
4.66%
Java

Original NVD Description

A stored Cross-Site Scripting (XSS) vulnerability in the Missing Data Codes functionality of REDCap before 11.4.0 allows remote attackers to execute JavaScript code in the client's browser by storing said code as a Missing Data Code value. This can then be leveraged to execute a Cross-Site Request Forgery attack to escalate privileges to administrator.