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Is FEPWeb CMS Digital Signature Extension safe?

This security report analyses whether FEPWeb CMS Digital Signature Extension is safe to install on your browser. We check FEPWeb CMS Digital Signature Extension for malicious behaviour, data exfiltration, suspicious permissions, and known vulnerabilities so you can decide if FEPWeb CMS Digital Signature Extension is safe for your personal or enterprise fleet.

Medium risk

Legitimate digital signature extension with postMessage origin validation vulnerability that could allow malicious websites to interact with the native messaging interface.

v1.3.7Chrome Web Store
45Risk

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

Publishers can request a review.

Updated 10 April 2026bcellnicpceplkigjnldelfglfmomhon

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