Video Downloader - MPMux
Version 1.2 View in Chrome Web Store
Last scanned: 2 days ago
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Extension Details
Developer:
mpmux.com
Rating:
4.9 ★
(1.6K ratings)
Size:
415KiB
Last Updated:
April 22, 2025
Users:
60,000
Context-Aware Verdict
This section provides a Claude-based AI analysis that applies additional context to the risk. Results are not guaranteed to be accurate.
HIGH
Risk Level
Trust Factors:
- The extension has a relatively high number of users (60,000) and a good rating (4.9/5), which suggests it is a popular and well-received extension.
- The developer (mpmux.com) appears to be a legitimate company focused on video downloading tools.
Concerns:
- The extension requests broad permissions, including the ability to read and modify data on any website (webRequest, tabs, and broad host permissions).
- It can inject scripts into any website (broad content script injection), potentially allowing it to steal sensitive data or modify website content.
- While the storage permission is not inherently risky, it could be used to store user data without their knowledge or consent.
Recommendations:
- Exercise caution when using this extension, as its broad permissions could potentially be exploited for malicious purposes.
- Consider running the extension in a separate browser profile or a sandboxed environment to isolate it from your main browsing activity.
- Regularly review the extension's permissions and behavior, and uninstall it if you notice any suspicious activity.
- Use reputable antivirus and anti-malware software to scan for potential threats.
- If you need to download videos, consider using alternative methods or tools that request fewer permissions and pose a lower risk.
Security Analysis
This section provides a detailed analysis of the extension's security posture, without broader context. Assumes worst-case impact.
CRITICAL
Overall Risk
Based on 5 total findings, ranked without considering overall context, including 4 high-risk and 1 medium-risk findings.
HIGH
Broad Content Script Injection
This extension can inject scripts into any website. This means it could potentially read sensitive data, modify website content, or steal credentials.
HIGH
Broad Host Permissions
This extension has broad host permissions allowing it to access many or all websites. This could potentially be used to steal sensitive data or track browsing activity.
HIGH
High-Risk Permission: tabs
This extension has the tabs permission. Can access browser tab information and manipulate tabs. This could potentially be used maliciously to compromise security or privacy.
HIGH
High-Risk Permission: webRequest
This extension has the webRequest permission. Can intercept and modify web requests. This could potentially be used maliciously to compromise security or privacy.
MEDIUM
Medium-Risk Permission: storage
This extension has the storage permission. Can store data locally.
Security Analysis Details
Required Permissions:
- tabs
- webRequest
- storage
- declarativeNetRequest
Host Permissions:
- http://*/*
- https://*/*
Embedded URLs (12 total):
| https://getbootstrap.com/ | https://github.com/twbs/bootstrap/blob/main/LICENSE | |
| http://www.w3.org/2000/svg | https://icons.getbootstrap.com/ | |
| https://github.com/twbs/icons/blob/main/LICENSE | https://aomedia.org/emsg/ID3 | |
| http://www.w3.org/ns/ttml#styling | https://mpmux.com/v1.json | |
| https://v1.mpmux.com | https://clients2.google.com/service/update2/crx | |
| https://mpmux.com/ | https://mpmux.com |
Raw Manifest
{ "name": "__MSG_manifest_name__", "icons": { "16": "img/icon-16.png", "48": "img/icon-48.png", "128": "img/icon-128.png" }, "action": { "default_icon": { "16": "img/icon-16.png", "48": "img/icon-48.png", "128": "img/icon-128.png" }, "default_popup": "popup.html", "default_title": "__MSG_manifest_browser_action__" }, "version": "1.2", "background": { "service_worker": "background.js" }, "short_name": "MPMux", "update_url": "https://clients2.google.com/service/update2/crx", "description": "__MSG_manifest_description__", "permissions": [ "tabs", "webRequest", "storage", "declarativeNetRequest" ], "homepage_url": "https://mpmux.com/", "default_locale": "en", "content_scripts": [ { "js": [ "js/jquery.min.js", "js/content-downloader.js" ], "run_at": "document_end", "matches": [ "*://mpmux.com/hlsdownloader", "*://mpmux.com/*/hlsdownloader", "*://mpmux.com/staticdownloader", "*://mpmux.com/*/staticdownloader", "*://mpmux.com/buffermuxer", "*://mpmux.com/*/buffermuxer", "*://*.mpmux.com/hlsdownloader", "*://*.mpmux.com/*/hlsdownloader", "*://*.mpmux.com/staticdownloader", "*://*.mpmux.com/*/staticdownloader", "*://*.mpmux.com/buffermuxer", "*://*.mpmux.com/*/buffermuxer" ] }, { "js": [ "js/content-listener.js" ], "run_at": "document_start", "matches": [ "*://*/*" ], "all_frames": true, "exclude_globs": [ "*//*.mpmux.com/*", "*//mpmux.com/*" ] } ], "host_permissions": [ "http://*/*", "https://*/*" ], "manifest_version": 3, "web_accessible_resources": [ { "matches": [ "*://*/*" ], "resources": [ "js/proxy.js" ] } ] }
Secure Annex (beta)
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