The incorrect domain may have been displayed in the address bar during an interrupted navigation attempt. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 133 and Thunderbird < 133.

An attacker could cause a select dropdown to be shown over another tab; this could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.

Inappropriate implementation in Autofill in Google Chrome prior to 131.0.6778.69 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in Blink in Google Chrome prior to 131.0.6778.69 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)

Inappropriate implementation in FileSystem in Google Chrome prior to 131.0.6778.69 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page. (Chromium security severity: Low)

Inappropriate implementation in Downloads in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to perform domain spoofing via a crafted domain name. (Chromium security severity: Medium)

A phishing site could have repurposed an `about:` dialog to show phishing content with an incorrect origin in the address bar. This vulnerability affects Firefox < 122 and Thunderbird < 115.7.

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)

A compromised content process could have updated the document URI. This could have allowed an attacker to set an arbitrary URI in the address bar or history. This vulnerability affects Firefox < 122.

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.

Insufficient policy enforcement 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.

Insufficient policy enforcement in navigations in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

Insufficient policy enforcement in notifications in Google Chrome prior to 74.0.3729.108 allowed a remote attacker to bypass notification restrictions via a crafted HTML page.

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.

Insufficient policy enforcement in full screen in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to spoof security UI 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 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.

Incorrect security UI in basic auth in Google Chrome on iOS prior to 84.0.4147.89 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Insufficient policy enforcement in omnibox in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to bypass security UI via a crafted HTML page.

Inappropriate implementation in WebView in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to spoof security UI via a crafted application.

Incorrect security UI in PWAs in Google Chrome prior to 84.0.4147.89 allowed a remote attacker who had persuaded the user to install a PWA to spoof the contents of the Omnibox (URL bar) via a crafted PWA.

Insufficient policy enforcement in extensions in Google Chrome prior to 81.0.4044.92 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.

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

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.

Inappropriate implementation in Full screen mode in Google Chrome on Android prior to 107.0.5304.62 allowed a remote attacker to hide the contents of the Omnibox (URL bar) via a crafted HTML page. (Chromium security severity: Medium)

It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

When accepting a malicious intent from other installed apps, Firefox for Android accepted manifests from arbitrary file paths and allowed declaring webapp manifests for other origins. This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83.

The signature of a digitally signed S/MIME email message may optionally specify the signature creation date and time. If present, Thunderbird did not compare the signature creation date with the message date and time, and displayed a valid signature despite a date or time mismatch. This could be used to give recipients the impression that a message was sent at a different date or time. This vulnerability affects Thunderbird < 115.6.

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 policy enforcement in Downloads in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to bypass Enterprise policy restrictions via a crafted download. (Chromium security severity: Medium)

Inappropriate implementation in Intents in Google Chrome on Android 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 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)

Inappropriate implementation in Prompts 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 Extensions in Google Chrome prior to 132.0.6834.83 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform UI spoofing via a crafted Chrome Extension. (Chromium security severity: Low)

Inappropriate implementation in WebRTC in Google Chrome prior to 87.0.4280.66 allowed a local attacker to bypass policy restrictions via a crafted HTML page.

A unicode RTL order character in the downloaded file name can be used to change the file's name during the download UI flow to change the file extension. This vulnerability affects Firefox for iOS < 28.

Inappropriate implementation in WebUSB in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to spoof security UI via a crafted HTML page.

Insufficient data validation in UI in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to remain on the page. This could have resulted in an incorrect URL being shown when used in conjunction with other unexpected browser behaviors. This vulnerability affects Firefox < 80.

Insufficient data validation in sharing in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

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.

Inappropriate implementation in Blink in Google Chrome prior to 59.0.3071.86 for Mac, Windows, and Linux, and 59.0.3071.92 for Android, allowed a remote attacker to display UI on a non attacker controlled tab 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.

Inappropriate implementation in Blink in Google Chrome prior to 59.0.3071.86 for Mac, Windows, and Linux, and 59.0.3071.92 for Android, allowed a remote attacker to display UI on a non attacker controlled tab via a crafted HTML page.

Inappropriate implementation in Permission Prompts in Google Chrome prior to 116.0.5845.96 allowed a remote attacker to obfuscate security UI via a crafted HTML page. (Chromium security severity: Medium)

Blink in Google Chrome prior to 57.0.2987.98 for Mac, Windows, and Linux and 57.0.2987.108 for Android failed to correctly propagate CSP restrictions to local scheme pages, which allowed a remote attacker to bypass content security policy via a crafted HTML page, related to the unsafe-inline keyword.

By navigating a tab using the history API, an attacker could cause the address bar to display the incorrect domain (with the https:// scheme, a blocked port number such as '1', and without a lock icon) while controlling the page contents. This vulnerability affects Firefox < 70.

By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird < 68.8.0.

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)