After a website had entered fullscreen mode, it could have used a previously opened popup to obscure the notification that indicates the browser is in fullscreen mode. Combined with spoofing the browser chrome, this could have led to confusing the user about the current origin of the page and credential theft or other attacks. This vulnerability affects Firefox < 74.

Insufficient policy enforcement in extensions in Google Chrome prior to 81.0.4044.92 allowed a remote attacker who had compromised the renderer process to bypass navigation restrictions via a crafted HTML page.

In Mozilla Bleach before 3.12, a mutation XSS in bleach.clean when RCDATA and either svg or math tags are whitelisted and the keyword argument strip=False.

Insufficient policy enforcement in downloads in Google Chrome prior to 83.0.4103.61 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

Inappropriate implementation in Skia in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Insufficient data validation in WebUI in Google Chrome prior to 84.0.4147.89 allowed a remote attacker who had compromised the renderer process to inject scripts or HTML into a privileged page via a crafted HTML page.

Incorrect implementation in full screen in Google Chrome prior to 83.0.4103.61 allowed a remote attacker to spoof security UI via a crafted HTML page.

Inappropriate implementation in iframe sandbox in Google Chrome prior to 84.0.4147.89 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

Inappropriate implementation in sharing in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to spoof security UI via a crafted HTML page.

Insufficient validation of untrusted input in clipboard in Google Chrome prior to 83.0.4103.61 allowed a local attacker to inject arbitrary scripts or HTML (UXSS) via crafted clipboard contents.

Inappropriate implementation in permissions in Google Chrome prior to 85.0.4183.83 allowed a remote attacker to spoof the contents of a permission dialog via a crafted HTML page.

Inappropriate implementation in full screen in Google Chrome prior to 83.0.4103.61 allowed a remote attacker to spoof security UI via a crafted HTML page.

If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

Policy bypass in CSP in Google Chrome prior to 84.0.4147.89 allowed a remote attacker to bypass content security policy via a crafted HTML page.

A reflected XSS vulnerability exists within the gateway, allowing an attacker to craft a specialized URL which could steal the user's authentication token. When combined with CVE-2020-6803, an attacker could fully compromise the system.

Insufficient policy enforcement in payments in Google Chrome prior to 83.0.4103.61 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

When following a link that opened an intent://-schemed URL, causing a custom tab to be opened, Firefox for Android could be tricked into displaying the incorrect URI. <br> *Note: This issue only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.7.

Insufficient policy enforcement in WebView in Google Chrome on Android prior to 83.0.4103.106 allowed a remote attacker to bypass site isolation via a crafted HTML page.

The session restore feature in Mozilla Firefox 3.x before 3.0.4 and 2.x before 2.0.0.18 allows remote attackers to violate the same origin policy to conduct cross-site scripting (XSS) attacks and execute arbitrary JavaScript with chrome privileges via unknown vectors.

Multiple cross-site scripting (XSS) vulnerabilities in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8 allow remote attackers to inject arbitrary web script or HTML via certain character encodings, including (1) a backspace character that is treated as whitespace, (2) 0x80 with Shift_JIS encoding, and (3) "zero-length non-ASCII sequences" in certain Asian character sets.

Swift File Transfer Mobile v1.1.2 and below was discovered to contain a cross-site scripting (XSS) vulnerability via the 'path' parameter of the 'list' and 'download' exception-handling.

Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19, Thunderbird 2.x before 2.0.0.19, and SeaMonkey 1.x before 1.1.14 does not properly parse URLs with leading whitespace or control characters, which might allow remote attackers to misrepresent URLs and simplify phishing attacks.

When a "javascript:" URL is drag and dropped by a user into the addressbar, the URL will be processed and executed. This allows for users to be socially engineered to execute an XSS attack on themselves. This vulnerability affects Firefox < 53.

The "mozAddonManager" allows for the installation of extensions from the CDN for addons.mozilla.org, a publicly accessible site. This could allow malicious extensions to install additional extensions from the CDN in combination with an XSS attack on Mozilla AMO sites. This vulnerability affects Firefox < 51.

If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:text/html" URL, triggering a reload will run the reloaded "data:text/html" page with its origin set incorrectly. This allows for a cross-site scripting (XSS) attack. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

Inappropriate implementation in Full screen mode in Google Chrome on Android prior to 99.0.4844.51 allowed a remote attacker to hide the contents of the Omnibox (URL bar) via a crafted HTML page.

Inappropriate implementation in Full screen mode in Google Chrome on Android prior to 99.0.4844.51 allowed a remote attacker to hide the contents of the Omnibox (URL bar) via a crafted HTML page.

Inappropriate implementation in Autofill in Google Chrome prior to 99.0.4844.51 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

Malicious sites can display a spoofed addressbar on a page when the existing location bar on the new page is scrolled out of view if an HTML editable page element is user selected. Note: This attack only affects Firefox for Android. Other operating systems are not affected. This vulnerability affects Firefox < 53.

A mechanism to spoof the addressbar through the user interaction on the addressbar and the "onblur" event. The event could be used by script to affect text display to make the loaded site appear to be different from the one actually loaded within the addressbar. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

Inappropriate implementation in Permissions in Google Chrome prior to 99.0.4844.51 allowed a remote attacker to tamper with the contents of the Omnibox (URL bar) via a crafted HTML page.

Inappropriate implementation in Compositing in Google Chrome prior to 97.0.4692.71 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Inappropriate implementation in Fenced Frames in Google Chrome prior to 97.0.4692.99 allowed a remote attacker who had compromised the renderer process to bypass navigation restrictions via a crafted HTML page.

Inappropriate implementation in Service Worker API in Google Chrome prior to 97.0.4692.99 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Inappropriate implementation in Navigation in Google Chrome prior to 97.0.4692.71 allowed a remote attacker to incorrectly set origin via a crafted HTML page.

Incorrect security UI in Autofill in Google Chrome prior to 97.0.4692.71 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Unspecified vulnerability in the session-restore feature in Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19 allows remote attackers to bypass the same origin policy, inject content into documents associated with other domains, and conduct cross-site scripting (XSS) attacks via unknown vectors related to restoration of SessionStore data.

Inappropriate implementation in WebShare in Google Chrome prior to 97.0.4692.71 allowed a remote attacker to potentially hide the contents of the Omnibox (URL bar) via a crafted HTML page.

Inappropriate implementation in Autofill in Google Chrome prior to 97.0.4692.99 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, failed to require a user gesture for powerful download operations, which allowed a remote attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted HTML page.

Blink in Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, allowed attacker controlled JavaScript to be run during the invocation of a private script method, which allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page.

Inappropriate use of www mismatch redirects in browser navigation in Google Chrome prior to 61.0.3163.79 for Mac, Windows, and Linux, and 61.0.3163.81 for Android, allowed a remote attacker to potentially downgrade HTTPS requests to HTTP via a crafted HTML page. In other words, Chrome could transmit cleartext even though the user had entered an https URL, because of a misdesigned workaround for cases where the domain name in a URL almost matches the domain name in an X.509 server certificate (but differs in the initial "www." substring).

Insufficient Policy Enforcement in Omnibox in Google Chrome prior to 60.0.3112.78 for Mac, Windows, Linux, and Android allowed a remote attacker to perform domain spoofing via IDN homographs in a crafted domain name.

Inappropriate implementation of unload handler handling in permission prompts in Google Chrome prior to 60.0.3112.78 for Linux, Windows, and Mac allowed a remote attacker to display UI on a non attacker controlled tab via a crafted HTML page.

Blink in Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, resolved promises in an inappropriate context, which allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page.

Blink in Google Chrome prior to 61.0.3163.79 for Mac, Windows, and Linux, and 61.0.3163.81 for Android, failed to correctly propagate CSP restrictions to javascript scheme pages, which allowed a remote attacker to bypass content security policy via a crafted HTML page.

Blink in Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, failed to properly enforce unsafe-inline content security policy, which allowed a remote attacker to bypass content security policy via a crafted HTML page.

Type confusion in extensions JavaScript bindings in Google Chrome prior to 60.0.3112.78 for Mac, Windows, Linux, and Android allowed a remote attacker to potentially maliciously modify objects via a crafted HTML page.

Insufficient Policy Enforcement in Omnibox in Google Chrome prior to 59.0.3071.115 for Mac allowed a remote attacker to perform domain spoofing via a crafted domain name containing a U+0620 character, aka Apple rdar problem 32458012.

Insufficient consistency checks in signature handling in the networking stack in Google Chrome prior to 58.0.3029.81 for Mac, Windows, and Linux, and 58.0.3029.83 for Android, allowed a remote attacker to incorrectly accept a badly formed X.509 certificate via a crafted HTML page.