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

CVE-2023-1421

Severity Medium
Score 6.1/10

Summary

A Reflected Cross-Site Scripting Vulnerability in the OAuth flow completion endpoints in Mattermost in versions 5.32.0 through 7.5.2 allows an attacker to send AJAX requests on behalf of the victim via sharing a crafted link with a malicious state parameter.

  • 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