extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Bookmark Sync

Firefox extension·by edv g.b.
51
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

Likely abandonedsafety score reduced by 30 points

  • No update in over 2 years
  • The developer's website is no longer reachable
Why this matters

An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.

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

Bookmark Sync's safety score vs every other extension we've scanned
Globally
50.94%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked across every extension we scan
In its category
40.94%of its category extensions carry more risk
This extension
Riskier ←→ Safer
Ranked within its category
Findings
6
median 38Lower is safer
Risky permissions
5
median 1Critical + high perms
Total permissions
10
median 4All declared perms
Critical findings
1
median 2Severity = Critical

Findings breakdown

Automated security signal · 6 distinct issues across 6 severities
6
distinct issues
detected
Scanners reported 9 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

5 risky permissions of 10 total
5 high-risk permissions require attention
This extension requests 10 permissions in total. 5 of them grant broad capabilities that are worth a careful look.
High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

High
Observe web requests

Can monitor all network requests made by the browser

High
View open tabs

Can see URLs and titles of all open tabs

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

High
Access local files

Can read files on your local filesystem opened in the browser

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Access current tab

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

Medium
Access bookmarks

Can read and modify your saved bookmarks

Low
Block network requests (declarative)

Can block or redirect network requests using predefined rules without seeing content

Low
View blocked request stats

Can see which declarative rules matched network requests

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