The HTTP Alternative Services feature in Mozilla Firefox before 37.0.1 allows man-in-the-middle attackers to bypass an intended X.509 certificate-verification step for an SSL server by specifying that server in the uri-host field of an Alt-Svc HTTP/2 response header.

When arbitrary text is sent over an FTP connection and a page reload is initiated, it is possible to create a modal alert message with this text as the content. This could potentially be used for social engineering attacks. This vulnerability affects Firefox < 66.

Mozilla Firefox before 37.0 on OS X does not ensure that the cursor is visible, which allows remote attackers to conduct clickjacking attacks via a Flash object in conjunction with DIV elements associated with layered presentation, and crafted JavaScript code that interacts with an IMG element.

Insufficient validation of untrusted input in command line handling in Google Chrome on Windows prior to 85.0.4183.83 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

Insufficient validation of untrusted input in Omnibox in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to perform domain spoofing via IDN homographs via a crafted domain name.

Insufficient data validation in AppCache in Google Chrome prior to 76.0.3809.87 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Insufficient policy enforcement in Content Security Policy in Google Chrome prior to 73.0.3683.75 allowed a remote attacker to bypass content security policy via a crafted HTML page.

Incorrect eliding of URLs in Omnibox in Google Chrome on iOS prior to 73.0.3683.75 allowed a remote attacker to perform domain spoofing via a crafted HTML page.

Incorrect inheritance of a new document's policy in Content Security Policy in Google Chrome prior to 73.0.3683.75 allowed a remote attacker to bypass content security policy via a crafted HTML page.

Insufficient policy enforcement in extensions in Google Chrome prior to 73.0.3683.75 allowed a remote attacker to initiate the extensions installation user interface via a crafted HTML page.

Excessive data validation in URL parser in Google Chrome prior to 75.0.3770.80 allowed a remote attacker who convinced a user to input a URL to bypass website URL validation via a crafted URL.

The extensions API in Google Chrome prior to 55.0.2883.75 for Mac, Windows and Linux, and 55.0.2883.84 for Android incorrectly handled navigation within PDFs, which allowed a remote attacker to temporarily spoof the contents of the Omnibox (URL bar) via a crafted HTML page containing PDF data.

The FrameLoader::notifyIfInitialDocumentAccessed function in core/loader/FrameLoader.cpp in Blink, as used in Google Chrome before 31.0.1650.63, makes an incorrect check for an empty document during presentation of a modal dialog, which allows remote attackers to spoof the address bar via vectors involving the document.write method.

The Document::open function in WebKit/Source/core/dom/Document.cpp in Google Chrome before 47.0.2526.73 does not ensure that page-dismissal event handling is compatible with modal-dialog blocking, which makes it easier for remote attackers to spoof Omnibox content via a crafted web site.

The SELECT element implementation in Mozilla Firefox before 25.0, Firefox ESR 24.x before 24.1, Thunderbird before 24.1, and SeaMonkey before 2.22 does not properly restrict the nature or placement of HTML within a dropdown menu, which allows remote attackers to spoof the address bar or conduct clickjacking attacks via vectors that trigger navigation off of a page containing this element.

CRLF injection vulnerability in the Digest Authentication support for Mozilla Firefox before 2.0.0.8 and SeaMonkey before 1.1.5 allows remote attackers to conduct HTTP request splitting attacks via LF (%0a) bytes in the username attribute.

Insufficient data validation in extensions in Google Chrome prior to 77.0.3865.75 allowed a remote attacker to disable extensions via a crafted HTML page.

Insufficient validation of untrusted input Downloads in Google Chrome prior to 95.0.4638.54 allowed a remote attacker to bypass navigation restrictions via a malicious file.

The cert_TestHostName function in lib/certdb/certdb.c in the certificate-checking implementation in Mozilla Network Security Services (NSS) before 3.16 accepts a wildcard character that is embedded in an internationalized domain name's U-label, which might allow man-in-the-middle attackers to spoof SSL servers via a crafted certificate.

Google Chrome before 15.0.874.102 does not properly handle history data, which allows user-assisted remote attackers to spoof the URL bar via unspecified vectors.

Google Chrome before 14.0.835.163 allows user-assisted remote attackers to spoof the URL bar via vectors related to the forward button.

Cross-application scripting vulnerability in the Browser URL loading functionality in Android 2.3.4 and 3.1 allows local applications to bypass the sandbox and execute arbitrary Javascript in arbitrary domains by (1) causing the MAX_TAB number of tabs to be opened, then loading a URI to the targeted domain into the current tab, or (2) making two startActivity function calls beginning with the targeted domain's URI followed by the malicious Javascript while the UI focus is still associated with the targeted domain.

Insufficient data validation in QR scanner in Google Chrome on iOS prior to 90.0.4430.72 allowed an attacker displaying a QR code to perform domain spoofing via a crafted QR code.

Insufficient data validation in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page.

Insufficient data validation in Omnibox in Google Chrome prior to 85.0.4183.83 allowed a remote attacker to perform domain spoofing via IDN homographs via a crafted domain name.

By downloading a file with the .fileloc extension, a semi-privileged extension could launch an arbitrary application on the user's computer. The attacker is restricted as they are unable to download non-quarantined files or supply command line arguments to the application, limiting the impact. Note: this issue only occurs on Mac OSX. Other operating systems are unaffected. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

Insufficient data validation in media router in Google Chrome prior to 83.0.4103.61 allowed a remote attacker who had compromised the renderer process to bypass navigation restrictions via a crafted HTML page.

Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 do not properly restrict calls to DOMWindowUtils (aka nsDOMWindowUtils) methods, which allows remote attackers to bypass intended access restrictions via crafted JavaScript code.

Google Chrome prior to 54.0.2840.85 for Android incorrectly handled rapid transition into and out of full screen mode, which allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via crafted HTML pages.

Mozilla Firefox before 44.0 allows user-assisted remote attackers to spoof a trailing substring in the address bar by leveraging a user's paste of a (1) wyciwyg: URI or (2) resource: URI.

Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11 do not properly handle duplicate values in X-Frame-Options headers, which makes it easier for remote attackers to conduct clickjacking attacks via a FRAME element referencing a web site that produces these duplicate values.

Insufficient data validation in DevTools in Google Chrome prior to 64.0.3282.119 allowed a remote attacker to potentially leak user cross-origin data via a crafted Chrome Extension.

A JavaScript focused window could overlap the fullscreen notification in Fullscreen in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to obscure the full screen warning via a crafted HTML page.

Object lifecycle issue in Chrome Custom Tab in Google Chrome prior to 65.0.3325.146 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Incorrect security UI in Omnibox in Google Chrome prior to 64.0.3282.119 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Missing confusable characters in Internationalization in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted domain name.

Insufficient data validation in DevTools in Google Chrome prior to 64.0.3282.119 allowed a remote attacker to potentially leak user cross-origin data via a crafted Chrome Extension.

Incorrect security UI in Omnibox in Google Chrome prior to 64.0.3282.119 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Incorrect enforcement of CSP for <object> tags in Blink in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to bypass content security policy via a crafted HTML page.

Lack of timeout on extension install prompt in Extensions in Google Chrome prior to 68.0.3440.75 allowed a remote attacker to trigger installation of an unwanted extension via a crafted HTML page.

If manipulated hyperlinked text with "chrome:" URL contained in it is dragged and dropped on the "home" icon, the home page can be reset to include a normally-unlinkable chrome page as one of the home page tabs. This vulnerability affects Firefox < 60.

The JSON Viewer displays clickable hyperlinks for strings that are parseable as URLs, including "javascript:" links. If a JSON file contains malicious JavaScript script embedded as "javascript:" links, users may be tricked into clicking and running this code in the context of the JSON Viewer. This can allow for the theft of cookies and authorization tokens which are accessible to that context. This vulnerability affects Firefox < 60.

The web console and JavaScript debugger do not sanitize all output that can be hyperlinked. Both will display "chrome:" links as active, clickable hyperlinks in their output. Web sites should not be able to directly link to internal chrome pages. Additionally, the JavaScript debugger will display "javascript:" links, which users could be tricked into clicking by malicious sites. This vulnerability affects Firefox < 60.

It is possible to spoof the filename of an attachment and display an arbitrary attachment name. This could lead to a user opening a remote attachment which is a different file type than expected. This vulnerability affects Thunderbird ESR < 52.8 and Thunderbird < 52.8.

When the text of a specially formatted URL is dragged to the addressbar from page content, the displayed URL can be spoofed to show a different site than the one loaded. This allows for phishing attacks where a malicious page can spoof the identify of another site. This vulnerability affects Firefox < 58.

Incorrect handling of confusable characters in URL Formatter in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted domain name.

Insufficient data validation in filesystem URIs in Google Chrome prior to 68.0.3440.75 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted domain name.

Insufficient data validation in Extensions API in Google Chrome prior to 68.0.3440.75 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

A missing check for popup window handling in Fullscreen in Google Chrome on macOS prior to 69.0.3497.81 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

A mechanism where when a new tab is loaded through JavaScript events, if fullscreen mode is then entered, the addressbar will not be rendered. This would allow a malicious site to displayed a spoofed addressbar, showing the location of an arbitrary website instead of the one loaded. Note: this issue only affects Firefox for Android. Desktop Firefox is unaffected. This vulnerability affects Firefox < 54.