dev.to· Aug 24, 2026· by parsai

The URL Looked Public. Playwright Could Still Reach localhost.

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A browser smoke test sounds read-only: open a page, inspect the DOM, save a report. But the page...
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
#showdev#testing#playwright#security