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

CVE-2024-49758

Medium
4.8/10

Summary

LibreNMS is an open-source, PHP/MySQL/SNMP-based network monitoring system. A user with an Admin role can add Notes to a device, but the application did not properly sanitize the user input, when the "ExamplePlugin" is enabled, if javascript code is inside the device's Notes, it will be triggered. This vulnerability affects librenms/librenms versions 21.11.0 through 24.9.1.

  • LOW
  • NETWORK
  • LOW
  • CHANGED
  • REQUIRED
  • HIGH
  • 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.

References

Advisory Timeline

  • Published