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Case File

CVE-2021-40542

MEDIUM · CVSS 6.1 EPSS 2.99% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-10-11 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.1. It affects Java. Public exploit code or proof-of-concept references have been detected in its references. Exploitation may require the attacker to be authenticated.

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-2021-40542
Severity
MEDIUM
CVSS
6.1
EPSS
2.99%
Java

Original NVD Description

Opensis-Classic Version 8.0 is affected by cross-site scripting (XSS). An unauthenticated user can inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.php.

Related CVEs

Other vulnerabilities affecting the same vendor(s)