Description

HTML codes can be entered and successfully run in the journal session of Monica, which allows an attacker to trigger XSS query’s like <svg/onload=alert("StoredXSS")> causing a persistant stored XSS in the journal session.
files at monica/2.
<3

POC

1. setup monica using docker or other means like their online test platform.
   • source : LINK
2. go to the journal part.
3. try payload <svg/onload=alert("blah!!,blah!!!,blah!!!!")>

Fix Suggestion

• Sanitize the input / escape the xss charecters or else escape the user inputs from html tags, i think it works.