TunnelBear VPNSecurity Analysis

Chromev4.1.0MV3February 18, 2026 at 11:43 AM
Potentially unsafe

This extension shows concerning patterns that may indicate risky behavior. Proceed with caution.

6.3HIGH
6.3 HIGHRaw: 7.9

This extension shows significant risk signals. Review the findings below carefully before installing or continuing to use it.

Based on 9 permissions including high-risk ones, 35 code findings, 2 dangerous combinations.

Trust Signals(5.5/10)

Users
1.0M
Rating
4.1(33K reviews)
Developer
TunnelBear, LLC

Dangerous Combinations(2)

CRITICALNetwork interception + external communication

Extension intercepts network traffic and sends data externally — potential man-in-the-middle behavior.

webRequest/webRequestBlocking+external network request
CRITICALExtension management + dynamic code execution

Extension manages other extensions and executes dynamic code — behavior consistent with malware dropper.

management+eval/Function/dynamic code
Permissions
8.5/10
Code
8.6/10
Combinations
10.0/10
Manifest/CSP
2.2/10

Permissions(9 analyzed)

Code Findings(16 patterns, 35 total)

Content Security Policy

No CSP Defined(1 issue)
MEDIUM
N/ANo CSP defined

This extension does not define a Content Security Policy. A CSP helps prevent XSS and code injection attacks.

Manifest Analysis(1 finding)

LOW
externally_connectableExternal messaging enabled

Extension accepts messages from 1 external pattern(s). Verify these are trusted origins.

External Domains(23)

${e${t*.tunnelbear.com8tiodxhk8a.execute-api.us-east-1.amazonaws.comaddons.mozilla.orgapi.polargrizzly.comapi.tunnelbear.comapp.configcat.comcdn-eu.configcat.comcdn-global.configcat.comconfigcat.comgithub.comhelp.tunnelbear.comleafletjs.commicrosoftedge.microsoft.comraw.github.comstaging.tunnelbear.comstuartk.comstuk.github.iotunnelbear.comvuejs.orgw6wgmwa4bd.execute-api.us-east-1.amazonaws.comwww.tunnelbear.com

Indicators of Compromise

15 indicators of compromise found

File Statistics

155
Total Files
4
JS Files
8.7 MB
Total Size

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