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QuillBot: AI Writing and Grammar Checker Tool

Version 4.28.0 View in Chrome Web Store

Last scanned: 27 days ago | force re-scan

Extension Details

Developer: https://quillbot.com/

Rating: 4.7 ★ (2.8K ratings)

Users: 4,000,000

Context-Aware Verdict

Security Analysis

CRITICAL

Overall Risk

Based on 8 total findings, ranked without considering overall context, including 4 high-risk and 4 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: cookies

This extension has the cookies permission. Can access and modify browser cookies. This could potentially be used maliciously to compromise security or privacy.

HIGH

Unsafe WebAssembly Execution

This extension's Content Security Policy allows 'wasm-unsafe-eval', which permits potentially dangerous WebAssembly code execution. This could be used to hide malicious code or perform CPU-intensive operations.

MEDIUM

Medium-Risk Permission: activeTab

This extension has the activeTab permission. Can access the active tab when clicking the extension icon.

MEDIUM

Medium-Risk Permission: contextMenus

This extension has the contextMenus permission. Can add items to the context menu.

MEDIUM

Medium-Risk Permission: notifications

This extension has the notifications permission. Can show notifications.

MEDIUM

Medium-Risk Permission: storage

This extension has the storage permission. Can store data locally.

Security Analysis Details

Required Permissions:

alarms
cookies
storage
activeTab
contextMenus
notifications
scripting
sidePanel

Host Permissions:

*://*/*
https://quillbot.com/
https://quillbot.com/*

Content Security Policy:

extension_pages: script-src 'self' 'wasm-unsafe-eval'; object-src 'self';

Embedded URLs (303 total):

https://docs.google.com/	https://github.com/rmariuzzo/Lang.js/blob/master/LICENSE
https://github.com/rmariuzzo/Lang.js	http://www.apache.org/licenses/LICENSE-2.0
https://github.com/facebook/regenerator/blob/main/LICENSE	https://languagetool.org/webextension/welcome
https://languagetool.org/webextension/uninstall	https://languagetool.org/webextension/login
https://languagetool.org/webextension/user	https://api.languagetool.org
https://rewriting.languagetoolplus.com	https://api-fallback.languagetool.org/v2
https://api.languagetoolplus.com/v2	https://languagetoolplus.com/api/v2
https://languagetool.org/send-feedback/	https://languagetool.org/webextension_config.json
https://languagetool.org/client-login	https://languagetool.org/ping
https://languagetool.org/webapi	https://api.languagetoolplus.com/statistics/api/store
https://qb-grammar-en.languagetool.org/phrasal-paraphraser/subscribe	https://languagetool.org/users/privacy-policy/
https://languagetool.org/legal/terms	https://languagetool.org/legal/privacy
https://languagetool.org/text-cursor	https://ol-collector.quillbot.dev
https://ol-collector.quillbot.com	https://quillbot.com
https://stream.quillbot.com	https://qb-extension.firebaseio.com
https://5b3c1d7a284db293d2a9dea5d8f9cd44@sentry-extension.quillbot.com/3	https://collector.quillbot.com
https://quillbot.com/upgrade?referrer=	https://play.google.com/store/apps/details?id=com.quillbot.mobile
https://quillbot.com/app/mac	https://microsoftedge.microsoft.com/addons/detail/quillbot-ai-writing-and-/cphpplikchcioccedpjacdanfibnimmh
https://apps.apple.com/us/app/quillbot-ai-writing-keyboard/id6463116243	https://workspace.google.com/marketplace/app/quillbot_paraphrasing_and_summarizing_to/305988918037
https://mail.google.com/mail/	https://www.google-analytics.com
https://docs.google.com/forms/d/1iQeB8Kc-VtJ4hqgusrgTM2gqoTEfcnJRyfsLxhyezS0/viewform?edit_requested=true	https://forms.gle/9B3npkDkZ9Xqj81L6
https://quillbot.com/blog/how-to-overcome-common-writing-roadblocks-part-1/	https://chromewebstore.google.com/detail/quillbot-ai-writing-and-g/iidnbdjijdkbmajdffnidomddglmieko/reviews?utm_source=chrome-active&utm_medium=referral&utm_campaign=feedback_review_cta_link
https://microsoftedge.microsoft.com/addons/detail/cphpplikchcioccedpjacdanfibnimmh	https://quillbot.com/app/text-cursor
https://edit-stream.quillbot.com	https://reactjs.org/docs/error-decoder.html?invariant=
http://www.w3.org/1999/xlink	http://www.w3.org/XML/1998/namespace
http://www.w3.org/2000/svg	http://www.w3.org/1998/Math/MathML
http://www.w3.org/1999/xhtml	https://docs.google.com
https://clients2.google.com/service/update2/crx	https://docs.google.com/document/
https://docs.google.com/presentation/	https://chatgpt.com/
https://gemini.google.com/	https://quillbot.com/
https://quillbot.dev/	https://localforage.github.io/localForage
http://bit.ly/sp-js	http://www.lisa.org/srx20
http://okapi.sf.net/srx-extensions	https://www.seven.one/
http://eo.lernu.net/lernado/gramatiko/demandoj/mallongigoj.php	https://languagetool.org/webextension/init
https://cerberus.languagetool.org/	https://giphy.com/
https://api.giphy.com/v1/gifs/search?	https://api.giphy.com/v1/gifs/trending?
https://policies.google.com/privacy?hl=en	https://docs.google.com/forms/d/e/1FAIpQLSc-URuQ81hhAa8ti80CXIG_x-PSoNfcjOoqDyuJ8eOLtYzxIQ/viewform
https://languagetool.org	https://languagetool.org/legal/privacy/?hidePremium=true#rephrasing
https://languagetool.org/legal/privacy/#rephrasing	https://languagetool.org/premium?utm_campaign=addon2-rewriting
https://chromewebstore.google.com/detail/grammatik-und-rechtschrei/oldceeleldhonbafppcapldpdifcinji/reviews	https://addons.mozilla.org/firefox/addon/languagetool/

Page 1 of 4

Raw Manifest

{
  "name": "__MSG_extensionName__",
  "icons": {
    "16": "assets/images/logo-16.png",
    "48": "assets/images/logo-48.png",
    "128": "assets/images/logo-128.png"
  },
  "action": {
    "default_icon": "assets/images/logo.png",
    "default_popup": "popup.html",
    "default_title": "QuillBot"
  },
  "version": "4.28.0",
  "commands": {
    "paraphrase": {
      "description": "Invoke the paraphraser-saga on the text"
    }
  },
  "background": {
    "service_worker": "background.js"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "side_panel": {
    "default_path": "sidePanel.html"
  },
  "update_url": "https://clients2.google.com/service/update2/crx",
  "description": "__MSG_extensionDescription__",
  "permissions": [
    "alarms",
    "cookies",
    "storage",
    "activeTab",
    "contextMenus",
    "notifications",
    "scripting",
    "sidePanel"
  ],
  "default_locale": "en",
  "content_scripts": [
    {
      "js": [
        "main-world-injection.js"
      ],
      "css": [],
      "world": "MAIN",
      "run_at": "document_start",
      "matches": [
        "https://docs.google.com/document/*",
        "https://docs.google.com/presentation/*"
      ]
    },
    {
      "js": [
        "content-gdocs-pre.js"
      ],
      "css": [],
      "run_at": "document_start",
      "matches": [
        "https://docs.google.com/document/*",
        "https://docs.google.com/presentation/*"
      ]
    },
    {
      "js": [
        "content-gdocs.js"
      ],
      "css": [
        "assets/css/quillbot-fonts.css",
        "assets/css/gdocs-overrides.css"
      ],
      "run_at": "document_idle",
      "matches": [
        "https://docs.google.com/document/*",
        "https://docs.google.com/presentation/*"
      ]
    },
    {
      "js": [
        "content-gpt-humanizer.js"
      ],
      "css": [],
      "run_at": "document_idle",
      "matches": [
        "https://chatgpt.com/*",
        "https://gemini.google.com/*"
      ],
      "all_frames": true
    },
    {
      "js": [
        "quillbot-content.js"
      ],
      "css": [
        "assets/css/quillbot-fonts.css"
      ],
      "run_at": "document_idle",
      "matches": [
        "*://*.wordpress.com/*"
      ],
      "all_frames": true,
      "exclude_matches": [
        "https://docs.google.com/document/*",
        "https://docs.google.com/presentation/*"
      ],
      "match_origin_as_fallback": true
    },
    {
      "js": [
        "quillbot-content.js"
      ],
      "css": [
        "assets/css/quillbot-fonts.css"
      ],
      "run_at": "document_idle",
      "matches": [
        "*://mail.google.com/*"
      ],
      "exclude_matches": [
        "https://docs.google.com/document/*",
        "https://docs.google.com/presentation/*"
      ]
    },
    {
      "js": [
        "detect-editors.js"
      ],
      "css": [
        "assets/css/quillbot-fonts.css"
      ],
      "run_at": "document_idle",
      "matches": [
        "*://*/*"
      ],
      "all_frames": true,
      "exclude_matches": [
        "https://docs.google.com/document/*",
        "https://docs.google.com/presentation/*",
        "*://mail.google.com/*",
        "*://*.wordpress.com/*"
      ],
      "match_about_blank": true,
      "match_origin_as_fallback": true
    },
    {
      "css": [
        "assets/css/styles.css"
      ],
      "run_at": "document_idle",
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "match_origin_as_fallback": true
    }
  ],
  "host_permissions": [
    "*://*/*",
    "https://quillbot.com/",
    "https://quillbot.com/*"
  ],
  "manifest_version": 3,
  "externally_connectable": {
    "matches": [
      "https://*.coursehero.com/*",
      "https://*.quillbot.com/*",
      "https://*.quillbot.dev/*",
      "https://quillbot.com/*",
      "https://quillbot.dev/*"
    ]
  },
  "minimum_chrome_version": "88",
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self';"
  },
  "web_accessible_resources": [
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "quillClassic.js"
      ]
    },
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "assets/fonts/*",
        "assets/css/*",
        "assets/images/*",
        "assets/emojibase-data/*"
      ]
    },
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "injection.js"
      ]
    },
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "content.js"
      ]
    },
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "executor.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "quillbot-content.js",
        "/content/styles/*",
        "toolboxjs.js",
        "toolbox/*.html"
      ]
    }
  ]
}

QuillBot: AI Writing and Grammar Checker Tool

Extension Details

Context-Aware Verdict

Security Analysis

Security Analysis Details

Required Permissions:

Host Permissions:

Content Security Policy:

Embedded URLs (303 total):

Raw Manifest

Secure Annex (beta)