React. XSS via a spoofed React element on versions under 0.14.0.
Impact area
Security
Severity
low
Affected element
ServiceNow
UI Script
Salesforce
Static Resource
Rule number
SN-JSL-REACT-LESSTHAN-V0140 (for ServiceNow)
SF-JSL-REACT-LESSTHAN-V0140 (for Salesforce)
Impact
Including untrusted objects as React children can result in an XSS security vulnerability. This one took advantage of the way the arguments passed to React functions were being validated, tricking React into thinking it was rendering a React element instead of the string that was expected.
Remediation
Update the React JS library to the latest version.
Time to fix
30 min
References
This rule is linked to Common Weakness Enumeration CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')..