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SECURITY REPORT · EXTENSHI SCAN

GMX MailCheck for Firefox

Firefox extension·by 1&1 Mail & Media GmbH
71
/ 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

GMX MailCheck for Firefox's safety score vs every other extension we've scanned
Globally
71.16%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked across every extension we scan
In its category
61.16%of its category extensions carry more risk
This extension
Riskier ←→ Safer
Ranked within its category
Findings
34
median 38Lower is safer
Risky permissions
3
median 1Critical + high perms
Total permissions
39
median 4All declared perms
Critical findings
0
median 2Severity = Critical

Findings breakdown

Automated security signal · 34 distinct issues across 6 severities
34
distinct issues
detected
Scanners reported 36 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

3 risky permissions of 39 total
2 critical permissions require attention
This extension requests 39 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Manage other extensions

Can enable, disable, or uninstall other browser extensions

Critical
Access to all websites(optional)

Can read and modify content on every website you visit

High
View open tabs

Can see URLs and titles of all open tabs

Medium
Access current tab

Can temporarily access the content of the active tab when you click the extension

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Add context menu items

Can add custom items to the right-click context menu

Medium
Access user identity

Can get OAuth2 tokens and access your Google account identity

Low
Trigger searches

Can trigger searches using the default search engine

Info
https://*.gmx.net/*

No additional information available.

Info
https://*.web.de/*

No additional information available.

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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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