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Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE-2024-21535

Severity Medium
Score 6.1/10

Summary

The package markdown-to-jsx versions prior to 7.4.0 are vulnerable to Cross-site Scripting (XSS) via the "src" property due to improper input sanitization. An attacker can execute arbitrary code by injecting a malicious "iframe" element in the markdown.

  • LOW
  • NETWORK
  • LOW
  • CHANGED
  • REQUIRED
  • NONE
  • LOW
  • NONE

CWE-79 - Cross Site Scripting

Cross-Site Scripting, commonly referred to as XSS, is the most dominant class of vulnerabilities. It allows an attacker to inject malicious code into a pregnable web application and victimize its users. The exploitation of such a weakness can cause severe issues such as account takeover, and sensitive data exfiltration. Because of the prevalence of XSS vulnerabilities and their high rate of exploitation, it has remained in the OWASP top 10 vulnerabilities for years.

Advisory Timeline

  • Published