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

CVE-2021-37794

Medium
5.4/10

Summary

A stored Cross-Site Scripting (XSS) vulnerability exists in FileBrowser in versions prior to 2.16.0 that allows an authenticated user authorized to upload a malicious ".svg" file which acts as a stored Cross-Site Scripting (XSS) payload. If this stored Cross-Site Scripting (XSS) payload is triggered by an administrator it will trigger malicious OS commands on the server running the FileBrowser instance.

  • LOW
  • NETWORK
  • LOW
  • CHANGED
  • REQUIRED
  • LOW
  • 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