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


Severity Medium
Score 6.1/10


In versions 1.3.1-0.20190301021747-ccb9e902956d through 1.9.0. The "filename" parameter of the "Context.FileAttachment" function is not properly sanitized. A maliciously crafted filename can cause the "Content-Disposition" header to be sent with an unexpected filename value or otherwise modify the "Content-Disposition" header.

  • LOW
  • LOW
  • 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