Skip to main content

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


Severity Medium
Score 6.1/10


Reflected XSS vulnerability in Shaarli v0.9.1 allows an unauthenticated attacker to inject JavaScript via the searchtags parameter to index.php. If the victim is an administrator, an attacker can (for example) take over the admin session or change global settings or add/delete links. It is also possible to execute JavaScript against unauthenticated users.

  • 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