SECURITY REPORT · EXTENSHI SCAN
MCMWatch
Firefox extension·by Sandalas
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
- Bundles libraries with known vulnerabilities and no fix in sight
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
MCMWatch's safety score vs every other extension we've scanned
Globally
47%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Games Entertainment
21%of games entertainment extensions carry more risk
Riskier ←→ Safer
Ranked against 8,778 games entertainment extensions
Findings
14
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
5
median 3Declared in manifest
Active users
1
median 4vs category median
Findings breakdown
Automated security signal · 14 distinct issues across 6 severities
14
distinct issues
detected
detected
Scanners reported 21 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High17%
Needs Review00%
Medium1179%
Low214%
Info00%
Permissions requested
1 risky permission of 5 total
1 high-risk permission require attention
This extension requests 5 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Show notifications
Can display desktop notifications outside the browser
Info
https://www.sandalas.de/projects/mcm/mcm_watch.php
No additional information available.
Info
https://www.cardmarket.com/de/Magic/Products/Singles/*
No additional information available.
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Scan performed by extenshi.io · Aug 17, 2026
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