SECURITY REPORT · EXTENSHI SCAN
OysterVPN Browser Extension
Firefox extension·by OysterVPN
0
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
OysterVPN Browser Extension's safety score vs every other extension we've scanned
Globally
71.1%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
61.099999999999994%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
13
median 38Lower is safer
Risky permissions
6
median 1Critical + high perms
Total permissions
10
median 4All declared perms
Critical findings
1
median 2Severity = Critical
Findings breakdown
Automated security signal · 13 distinct issues across 6 severities
13
distinct issues
detected
detected
Scanners reported 16 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical18%
High215%
Needs Review00%
Medium969%
Low18%
Info00%
Permissions requested
6 risky permissions of 10 total
1 critical permission require attention
This extension requests 10 permissions in total. 6 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
High
Observe web requests
Can monitor all network requests made by the browser
High
Block and modify web requests
Can intercept, block, or modify any network request before it completes
High
Control proxy settings
Can route your browser traffic through a proxy server
High
Control privacy settings
Can modify browser privacy settings like Do Not Track and safe browsing
High
Auth request provider
Can provide authentication credentials for web requests
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Medium
Store local data
Can save data locally in the browser for persistence
Low
Block network requests (declarative)
Can block or redirect network requests using predefined rules without seeing content
Info
*://oystervpn.com/*
No additional information available.
Are you the author of OysterVPN Browser Extension?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show OysterVPN Browser Extension's live security score on GitHub or in your docs
Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
Browser extensions made transparent.