vetkit.swift.webview.javascript-interpolation

JavaScript evaluated in a web view is built with string interpolation. A quote or script fragment in the interpolated value runs as code in the page (script injection).

Last updated: 2026-11-01

Suite: Security

swift

JavaScript evaluated in a web view is built with string interpolation. A quote or script fragment in the interpolated value runs as code in the page (script injection).

Category: SECURITY · Engine rule severity: WARNING

How to fix it

Pass values as arguments with callAsyncJavaScript(_:arguments:in:contentWorld:), or JSON-encode them with JSONSerialization / JSONEncoder before embedding.

References

https://developer.apple.com/documentation/webkit/wkwebview/3656441-callasyncjavascript

Source: packages/engine/rules/sast/swift.yml.

Generated from shipped rule definitions at build time. Matching is a review signal, not proof of exploitability. “generic” denotes text matching, not complete language or framework coverage. Runtime configuration and available tools affect whether a rule runs.