It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an incorrect timestamp used to prevent input after page load. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.

Inappropriate implementation in Extensions API in Google Chrome prior to 114.0.5735.90 allowed an attacker who convinced a user to install a malicious extension to spoof the contents of the UI via a crafted Chrome Extension. (Chromium security severity: Low)

Inappropriate implementation in Compositing in Google Chrome prior to 119.0.6045.105 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Navigation in Google Chrome prior to 113.0.5672.63 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform domain spoofing via a crafted HTML page. (Chromium security severity: Low)

Opening Javascript links in a new tab via long-press in the Firefox iOS client could result in a malicious script spoofing the URL of the new tab. This vulnerability affects Firefox for iOS < 134.

Under certain conditions, Firefox did not display a warning when a user attempted to navigate to a new protocol handler. This vulnerability affects Firefox < 121.

Applications which spawn a Toast notification in a background thread may have obscured fullscreen notifications displayed by Firefox. *This issue only affects Android versions of Firefox and Firefox Focus.* This vulnerability affects Firefox < 121.

Incorrect security UI in Downloads in Google Chrome prior to 119.0.6045.105 allowed a remote attacker to obfuscate security UI via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Picture In Picture in Google Chrome prior to 114.0.5735.90 allowed a remote attacker who had compromised the renderer process to spoof the contents of the Omnibox (URL bar) via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Picture In Picture in Google Chrome prior to 114.0.5735.90 allowed a remote attacker who had compromised the renderer process to spoof the contents of the Omnibox (URL bar) via a crafted HTML page. (Chromium security severity: Medium)

A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks. *Note: This issue only affected macOS operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

Inappropriate implementation in WebApp Provider in Google Chrome prior to 119.0.6045.105 allowed a remote attacker to obfuscate security UI via a crafted HTML page. (Chromium security severity: Low)

A malicious web site can enter fullscreen mode while simultaneously triggering a WebAuthn prompt. This could have obscured the fullscreen notification and could have been leveraged in a spoofing attack. This vulnerability affects Firefox < 119.

Incorrect security UI in Downloads in Google Chrome prior to 119.0.6045.105 allowed a remote attacker to perform domain spoofing via a crafted domain name. (Chromium security severity: Medium)

The fullscreen notification could have been hidden on Firefox for Android by using download popups, resulting in potential user confusion or spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 111.

Inappropriate implementation in Input in Google Chrome prior to 118.0.5993.70 allowed a remote attacker to spoof security UI via a crafted HTML page. (Chromium security severity: Low)

When viewing an email message A, which contains an attached message B, where B is encrypted or digitally signed or both, Thunderbird may show an incorrect encryption or signature status. After opening and viewing the attached message B, when returning to the display of message A, the message A might be shown with the security status of message B. This vulnerability affects Thunderbird < 91.9.

Inappropriate implementation in Prompts in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to potentially spoof security UI via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Custom Tabs in Google Chrome on Android prior to 117.0.5938.62 allowed a remote attacker to obfuscate a permission prompt via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Custom Mobile Tabs in Google Chrome on Android prior to 117.0.5938.62 allowed a remote attacker to spoof security UI via a crafted HTML page. (Chromium security severity: Medium)

Insufficient policy enforcement in Autofill in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to bypass Autofill restrictions via a crafted HTML page. (Chromium security severity: Low)

Inappropriate implementation in Interstitials in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to obfuscate security UI via a crafted HTML page. (Chromium security severity: Low)

Inappropriate implementation in Input in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to spoof security UI via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Picture in Picture in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to spoof security UI via a crafted HTML page. (Chromium security severity: Low)

Insufficient data validation in URL formatting in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to perform domain spoofing via IDN homographs via a crafted domain name.

Inappropriate implementation in PictureInPicture in Google Chrome prior to 113.0.5672.63 allowed a remote attacker who had compromised the renderer process to obfuscate the security UI via a crafted HTML page. (Chromium security severity: Low)

Inappropriate implementation in PictureInPicture in Google Chrome prior to 113.0.5672.63 allowed an attacker who convinced a user to install a malicious extension to perform an origin spoof in the security UI via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Prompts in Google Chrome on Android prior to 113.0.5672.63 allowed a remote attacker to bypass permissions restrictions via a crafted HTML page. (Chromium security severity: Low)

Inappropriate implementation in Full Screen Mode in Google Chrome on Android prior to 113.0.5672.63 allowed a remote attacker to hide the contents of the Omnibox (URL bar) via a crafted HTML page. (Chromium security severity: Medium)

By displaying a prompt with a long description, the fullscreen notification could have been hidden, resulting in potential user confusion or spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 111.

When sharing geolocation during an active WebRTC share, Firefox could have reset the webRTC sharing state in the user interface, leading to loss of control over the currently granted permission. This vulnerability affects Firefox < 85.

Incorrect security UI in iOS in Google Chrome prior to 123.0.6312.58 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)

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.

Inappropriate implementation in iOS in Google Chrome prior to 123.0.6312.58 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)

Inappropriate implementation in Downloads in Google Chrome prior to 123.0.6312.58 allowed a remote attacker to perform UI spoofing via a crafted URL. (Chromium security severity: Medium)

Insufficient policy enforcement in Extensions API in Google Chrome prior to 111.0.5563.64 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension. (Chromium security severity: Medium)

Inappropriate implementation in Permission prompts in Google Chrome prior to 111.0.5563.64 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Medium)

Insufficient policy enforcement in Navigation in Google Chrome on iOS prior to 111.0.5563.64 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)

Insufficient policy enforcement in Intents in Google Chrome on Android prior to 111.0.5563.64 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Intents in Google Chrome on Android prior to 111.0.5563.64 allowed a remote attacker to perform domain spoofing via a crafted HTML page. (Chromium security severity: Low)

Inappropriate implementation in Internals in Google Chrome prior to 111.0.5563.64 allowed a remote attacker to spoof the origin of an iframe via a crafted HTML page. (Chromium security severity: Low)

Inappropriate implementation in WebApp Installs in Google Chrome on Android prior to 111.0.5563.64 allowed an attacker who convinced a user to install a malicious WebApp to spoof the contents of the PWA installer via a crafted HTML page. (Chromium security severity: Medium)

Incorrect security UI in Notifications in Google Chrome on Android prior to 103.0.5060.53 allowed a remote attacker to obscure the full screen notification via a crafted HTML page. (Chromium security severity: Low)

By confusing the browser, the fullscreen notification could have been delayed or suppressed, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox < 108.

Insufficient policy enforcement in DevTools in Google Chrome prior to 108.0.5359.71 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension. (Chromium security severity: Medium)

Insufficient validation of untrusted input in CORS in Google Chrome on Android prior to 108.0.5359.71 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)

Insufficient validation of untrusted input in Downloads in Google Chrome prior to 108.0.5359.71 allowed an attacker who convinced a user to install a malicious extension to bypass Downloads restrictions via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Navigation in Google Chrome on iOS prior to 108.0.5359.71 allowed a remote attacker to spoof the contents of the modal dialogue via a crafted HTML page. (Chromium security severity: Medium)

Insufficient policy enforcement in Popup Blocker in Google Chrome prior to 108.0.5359.71 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Permissions in Google Chrome prior to 139.0.7258.66 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)