SECURITY REPORT · EXTENSHI SCAN
RTF Viewer
Firefox extension·by Tom Zöhner
0
/ 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 5 years
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
RTF Viewer's safety score vs every other extension we've scanned
Globally
21%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Appearance
5%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 17,915 appearance extensions
Findings
14
median 3Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
3
median 2Declared in manifest
Active users
338
median 3vs category median
Findings breakdown
Automated security signal · 14 distinct issues across 6 severities
14
distinct issues
detected
detected
Scanners reported 15 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical17%
High214%
Needs Review00%
Medium964%
Low214%
Info00%
Permissions requested
3 risky permissions of 3 total
1 critical permission require attention
This extension requests 3 permissions in total. 3 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
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Scan performed by extenshi.io · Aug 24, 2026
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