Avast SafePrice | Comparison, deals, coupons
Version 23.1.1691 View in Chrome Web Store
Last scanned: about 6 hours ago
Extension Details
Developer:
https://www.avast.com/
Rating:
3.5 ★
(12 ratings)
Users:
20,000
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.
CRITICAL
Overall Risk
Trust Factors:
The extension comes from Avast, a well-established cybersecurity company with a strong reputation in the industry. However, the relatively low user count (20,000) and modest rating (3.5/5 from only 12 reviews) suggest limited adoption and mixed user satisfaction. The legitimate business purpose of providing price comparisons and deals does align with the requested permissions.
Concerns:
The extension requests extremely broad permissions that go far beyond what's necessary for price comparison functionality. The combination of webRequest, webNavigation, and tabs permissions creates a powerful surveillance capability that can monitor and intercept all web traffic. The universal content script injection (*://*/*) means this extension can access sensitive data on every website you visit, including banking sites, email, and personal accounts. The use of outdated Manifest V2 provides fewer security safeguards than modern extensions.
Recommendations:
Given the critical risk level, consider running this extension in a completely separate Chrome profile dedicated only to shopping activities. Alternatively, look for similar price comparison extensions with more limited permissions or use Avast's web-based price comparison tools instead. If you must use this extension, regularly review your browsing data and consider using it only when actively shopping, disabling it otherwise. Monitor for any unusual network activity or account access.
Findings
This section provides a detailed analysis of the extension's security posture, without broader context. Assumes worst-case impact.
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
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: webNavigation
This extension has the webNavigation permission. Can track your web navigation. 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.
MEDIUM
Older Manifest Version
This extension uses Manifest Version 2, which has fewer security restrictions than Manifest V3. Consider using extensions that have upgraded to V3.
Security Analysis Details
Required Permissions:
- *://*.avast.com/*
- http://*/*
- https://*/*
- storage
- tabs
- webNavigation
- webRequest
Embedded URLs (173 total):
| https://clients2.google.com/service/update2/crx | https://bugs.chromium.org/p/chromium/issues/detail?id=115138 | |
| https://cml.avast.com/display/FF/Avast+Analytics+Product+Code | https://analytics.ff.avast.com:443/receive3 | |
| https://analytics-stage.ff.avast.com:443/receive3 | https://sizzlejs.com/ | |
| https://js.foundation/ | https://jsperf.com/thor-indexof-vs-for/5 | |
| http://www.w3.org/TR/css3-selectors/#whitespace | https://www.w3.org/TR/css-syntax-3/#ident-token-diagram | |
| http://www.w3.org/TR/selectors/#attribute-selectors | http://www.w3.org/TR/CSS21/syndata.html#escaped-characters | |
| https://drafts.csswg.org/cssom/#common-serializing-idioms | https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled | |
| https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled | https://html.spec.whatwg.org/multipage/forms.html#category-listed | |
| https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled | https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled | |
| https://bugs.jquery.com/ticket/4833 | https://bugs.jquery.com/ticket/13378 | |
| https://bugs.jquery.com/ticket/12359 | https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section | |
| http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked | https://bugs.webkit.org/show_bug.cgi?id=136851 | |
| https://github.com/jquery/sizzle/pull/225 | http://www.w3.org/TR/selectors/#pseudo-classes | |
| http://www.w3.org/TR/selectors/#lang-pseudo | http://www.w3.org/TR/selectors/#empty-pseudo | |
| https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx | http://pegjs.org/ | |
| http://social.msdn.microsoft.com/Forums/en-US/iewebdevelopment/thread/30ef3add-767c-4436-b8a9-f1ca19b4812e/ | https://github.com/hij1nx/EventEmitter2 | |
| https://jquery.com/ | https://jquery.org/license | |
| https://github.com/whatwg/html/issues/2369 | https://html.spec.whatwg.org/#nonce-attributes | |
| https://promisesaplus.com/#point-59 | https://promisesaplus.com/#point-48 | |
| https://promisesaplus.com/#point-54 | https://promisesaplus.com/#point-75 | |
| https://promisesaplus.com/#point-64 | https://promisesaplus.com/#point-61 | |
| https://promisesaplus.com/#point-57 | https://bugs.chromium.org/p/chromium/issues/detail?id=378607 | |
| https://bugs.jquery.com/ticket/13393 | https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click | |
| https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html | https://bugs.chromium.org/p/chromium/issues/detail?id=470258 | |
| https://connect.microsoft.com/IE/feedback/details/1736512/ | https://jsperf.com/getall-vs-sizzle/2 | |
| https://drafts.csswg.org/cssom/#resolved-values | https://developer.mozilla.org/en-US/docs/CSS/display | |
| https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ | https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 | |
| https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ | https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace | |
| https://html.spec.whatwg.org/#strip-and-collapse-whitespace | https://bugzilla.mozilla.org/show_bug.cgi?id=687787 | |
| http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order | https://bugs.chromium.org/p/chromium/issues/detail?id=449857 | |
| http://example.com:80x/ | https://bugs.webkit.org/show_bug.cgi?id=137337 | |
| https://bugs.webkit.org/show_bug.cgi?id=29084 | https://bugs.chromium.org/p/chromium/issues/detail?id=589347 | |
| https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon | https://github.com/jquery/jquery/pull/557 | |
| https://lodash.com/ | http://dojofoundation.org/ | |
| http://underscorejs.org/LICENSE | https://lodash.com/license | |
| http://ecma-international.org/ecma-262/6.0/#sec-patterns | http://ecma-international.org/ecma-262/6.0/#sec-escaperegexppattern | |
| https://en.wikipedia.org/wiki/Combining_Diacritical_Marks | http://ecma-international.org/ecma-262/6.0/#sec-template-literal-lexical-components | |
| https://github.com/jashkenas/underscore/issues/1621 | https://github.com/jashkenas/underscore/pull/1247 | |
| https://code.google.com/p/v8/issues/detail?id=90 | https://es5.github.io/#x11.1.5 | |
| http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring | http://ecma-international.org/ecma-262/6.0/#sec-number.max_safe_integer |
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Raw Manifest
{ "name": "__MSG_avastAppShortName__", "icons": { "48": "common/ui/icons/logo-safeprice-48.png", "64": "common/ui/icons/logo-safeprice-64.png", "96": "common/ui/icons/logo-safeprice-96.png", "128": "common/ui/icons/logo-safeprice-128.png" }, "author": "Avast", "version": "23.1.1691", "background": { "scripts": [ "common/libs/q.js", "common/libs/eventemitter2.js", "common/libs/protobuf.js", "common/libs/lodash.js", "common/scripts/gpb.js", "common/libs/burger.js", "scripts/abek.bl.crx.js", "common/scripts/query.js", "common/scripts/wrc.js", "common/scripts/bal.js", "scripts/bs.crx.js", "scripts/bs.sp.crx.js" ] }, "options_ui": { "page": "options.html", "open_in_tab": true }, "update_url": "https://clients2.google.com/service/update2/crx", "description": "__MSG_avastAppDesc__", "permissions": [ "*://*.avast.com/*", "http://*/*", "https://*/*", "storage", "tabs", "webNavigation", "webRequest" ], "browser_action": { "default_icon": "common/ui/icons/logo-safeprice-gray.png" }, "default_locale": "en", "content_scripts": [ { "js": [ "common/libs/jquery.js", "common/libs/mustache.js", "common/libs/eventemitter2.js", "common/scripts/templates.js", "common/scripts/ial.js", "common/libs/csl.parser.js", "scripts/extension.js" ], "css": [ "common/ui/css/extension.css", "common/ui/fonts/fonts.css" ], "run_at": "document_end", "matches": [ "*://*/*" ], "exclude_matches": [ "*://*.google.com/maps/*", "*://*.google.ad/maps/*", "*://*.google.ae/maps/*", "*://*.google.com.af/maps/*", "*://*.google.com.ag/maps/*", "*://*.google.com.ai/maps/*", "*://*.google.al/maps/*", "*://*.google.am/maps/*", "*://*.google.co.ao/maps/*", "*://*.google.com.ar/maps/*", "*://*.google.as/maps/*", "*://*.google.at/maps/*", "*://*.google.com.au/maps/*", "*://*.google.az/maps/*", "*://*.google.ba/maps/*", "*://*.google.com.bd/maps/*", "*://*.google.be/maps/*", "*://*.google.bf/maps/*", "*://*.google.bg/maps/*", "*://*.google.com.bh/maps/*", "*://*.google.bi/maps/*", "*://*.google.bj/maps/*", "*://*.google.com.bn/maps/*", "*://*.google.com.bo/maps/*", "*://*.google.com.br/maps/*", "*://*.google.bs/maps/*", "*://*.google.bt/maps/*", "*://*.google.co.bw/maps/*", "*://*.google.by/maps/*", "*://*.google.com.bz/maps/*", "*://*.google.ca/maps/*", "*://*.google.cd/maps/*", "*://*.google.cf/maps/*", "*://*.google.cg/maps/*", "*://*.google.ch/maps/*", "*://*.google.ci/maps/*", "*://*.google.co.ck/maps/*", "*://*.google.cl/maps/*", "*://*.google.cm/maps/*", "*://*.google.cn/maps/*", "*://*.google.com.co/maps/*", "*://*.google.co.cr/maps/*", "*://*.google.com.cu/maps/*", "*://*.google.cv/maps/*", "*://*.google.com.cy/maps/*", "*://*.google.cz/maps/*", "*://*.google.de/maps/*", "*://*.google.dj/maps/*", "*://*.google.dk/maps/*", "*://*.google.dm/maps/*", "*://*.google.com.do/maps/*", "*://*.google.dz/maps/*", "*://*.google.com.ec/maps/*", "*://*.google.ee/maps/*", "*://*.google.com.eg/maps/*", "*://*.google.es/maps/*", "*://*.google.com.et/maps/*", "*://*.google.fi/maps/*", "*://*.google.com.fj/maps/*", "*://*.google.fm/maps/*", "*://*.google.fr/maps/*", "*://*.google.ga/maps/*", "*://*.google.ge/maps/*", "*://*.google.gg/maps/*", "*://*.google.com.gh/maps/*", "*://*.google.com.gi/maps/*", "*://*.google.gl/maps/*", "*://*.google.gm/maps/*", "*://*.google.gr/maps/*", "*://*.google.com.gt/maps/*", "*://*.google.gy/maps/*", "*://*.google.com.hk/maps/*", "*://*.google.hn/maps/*", "*://*.google.hr/maps/*", "*://*.google.ht/maps/*", "*://*.google.hu/maps/*", "*://*.google.co.id/maps/*", "*://*.google.ie/maps/*", "*://*.google.co.il/maps/*", "*://*.google.im/maps/*", "*://*.google.co.in/maps/*", "*://*.google.iq/maps/*", "*://*.google.is/maps/*", "*://*.google.it/maps/*", "*://*.google.je/maps/*", "*://*.google.com.jm/maps/*", "*://*.google.jo/maps/*", "*://*.google.co.jp/maps/*", "*://*.google.co.ke/maps/*", "*://*.google.com.kh/maps/*", "*://*.google.ki/maps/*", "*://*.google.kg/maps/*", "*://*.google.co.kr/maps/*", "*://*.google.com.kw/maps/*", "*://*.google.kz/maps/*", "*://*.google.la/maps/*", "*://*.google.com.lb/maps/*", "*://*.google.li/maps/*", "*://*.google.lk/maps/*", "*://*.google.co.ls/maps/*", "*://*.google.lt/maps/*", "*://*.google.lu/maps/*", "*://*.google.lv/maps/*", "*://*.google.com.ly/maps/*", "*://*.google.co.ma/maps/*", "*://*.google.md/maps/*", "*://*.google.me/maps/*", "*://*.google.mg/maps/*", "*://*.google.mk/maps/*", "*://*.google.ml/maps/*", "*://*.google.com.mm/maps/*", "*://*.google.mn/maps/*", "*://*.google.ms/maps/*", "*://*.google.com.mt/maps/*", "*://*.google.mu/maps/*", "*://*.google.mv/maps/*", "*://*.google.mw/maps/*", "*://*.google.com.mx/maps/*", "*://*.google.com.my/maps/*", "*://*.google.co.mz/maps/*", "*://*.google.com.na/maps/*", "*://*.google.com.ng/maps/*", "*://*.google.com.ni/maps/*", "*://*.google.ne/maps/*", "*://*.google.nl/maps/*", "*://*.google.no/maps/*", "*://*.google.com.np/maps/*", "*://*.google.nr/maps/*", "*://*.google.nu/maps/*", "*://*.google.co.nz/maps/*", "*://*.google.com.om/maps/*", "*://*.google.com.pa/maps/*", "*://*.google.com.pe/maps/*", "*://*.google.com.pg/maps/*", "*://*.google.com.ph/maps/*", "*://*.google.com.pk/maps/*", "*://*.google.pl/maps/*", "*://*.google.pn/maps/*", "*://*.google.com.pr/maps/*", "*://*.google.ps/maps/*", "*://*.google.pt/maps/*", "*://*.google.com.py/maps/*", "*://*.google.com.qa/maps/*", "*://*.google.ro/maps/*", "*://*.google.ru/maps/*", "*://*.google.rw/maps/*", "*://*.google.com.sa/maps/*", "*://*.google.com.sb/maps/*", "*://*.google.sc/maps/*", "*://*.google.se/maps/*", "*://*.google.com.sg/maps/*", "*://*.google.sh/maps/*", "*://*.google.si/maps/*", "*://*.google.sk/maps/*", "*://*.google.com.sl/maps/*", "*://*.google.sn/maps/*", "*://*.google.so/maps/*", "*://*.google.sm/maps/*", "*://*.google.sr/maps/*", "*://*.google.st/maps/*", "*://*.google.com.sv/maps/*", "*://*.google.td/maps/*", "*://*.google.tg/maps/*", "*://*.google.co.th/maps/*", "*://*.google.com.tj/maps/*", "*://*.google.tl/maps/*", "*://*.google.tm/maps/*", "*://*.google.tn/maps/*", "*://*.google.to/maps/*", "*://*.google.com.tr/maps/*", "*://*.google.tt/maps/*", "*://*.google.com.tw/maps/*", "*://*.google.co.tz/maps/*", "*://*.google.com.ua/maps/*", "*://*.google.co.ug/maps/*", "*://*.google.co.uk/maps/*", "*://*.google.com.uy/maps/*", "*://*.google.co.uz/maps/*", "*://*.google.com.vc/maps/*", "*://*.google.co.ve/maps/*", "*://*.google.vg/maps/*", "*://*.google.co.vi/maps/*", "*://*.google.com.vn/maps/*", "*://*.google.vu/maps/*", "*://*.google.ws/maps/*", "*://*.google.rs/maps/*", "*://*.google.co.za/maps/*", "*://*.google.co.zm/maps/*", "*://*.google.co.zw/maps/*", "*://*.google.cat/maps/*" ] } ], "manifest_version": 2, "web_accessible_resources": [ "common/ui/*", "common/ui/icons/*", "common/ui/css/*", "common/ui/fonts/*" ] }
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Detections
0Critical
0
High
0
Medium
0
Low
0
Has Verdicts
Yes
Manifest Findings
0Critical
0
High
0
Medium
0
Low
0
Secure Annex analyzed version: -