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


Severity Medium
Score 5.4/10


The application is vulnerable to Stored Cross-Site Scripting (XSS) in the endpoint /sofer/DocumentService.asc/SaveAnnotation, where input data transmitted via the POST method in the parameters author and text are not adequately sanitized and validated. This allows for the injection of malicious JavaScript code. The vulnerability was identified in the function for adding new annotations while editing document content. Reporters inform that the vulnerability has been removed in software versions above 11.1.x. Previous versions may also be vulnerable, but this has not been confirmed.

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  • 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