Is Five9 Softphone Extension safe?

Medium risk

Enterprise softphone extension that implements postMessage handlers without origin validation, creating potential for cross-origin message injection. Connects to local WebSocket service at ws://127.0.0.1:8083.

Five9, Inc.v13.1.2Chrome Web Store
45Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

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Findings

Updated 18 May 2026bicpgcafpnanabffjhclgpeehoadhglp