React. Potential XSS Vulnerability When Using User Data As A Key. This Only Affects v0.5.x And v0.4.x

Impact area

Security

Severity

low

Affected element

ServiceNow

UI Script

Salesforce

Static Resource

Rule number

SN-JSL-REACT-BETWEEN-V033-V060 (for ServiceNow)

SF-JSL-REACT-BETWEEN-V033-V060 (for Salesforce)

Impact #

Typically “safe” data is used for a key, for example, an id from your database, or a unique hash. However there are cases where it may be reasonable to use user generated content. A carefully crafted piece of content could result in arbitrary JS execution.

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’).

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