A crafted URL using a blob: URI could have hidden the true origin of the page, resulting in a potential spoofing attack. *Note: This issue only affected Android operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 141.

Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Insufficient validation of untrusted input in Core in Google Chrome prior to 139.0.7258.66 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page. (Chromium security severity: Low)

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)

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)

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 Filesystems 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)

Inappropriate implementation in Picture In Picture in Google Chrome prior to 139.0.7258.66 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 Picture In Picture in Google Chrome prior to 139.0.7258.66 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: Low)

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)

In KDE KMail 5.2.3, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.

Inappropriate implementation in Compositing in Google Chrome on Android prior to 94.0.4606.54 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

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)

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)

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)

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)

By displaying a form validity message in the correct location at the same time as a permission prompt (such as for geolocation), the validity message could have obscured the prompt, resulting in the user potentially being tricked into granting the permission. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

When a URL was provided in a link querystring parameter, Firefox for Android would follow that URL instead of the correct URL, potentially leading to phishing attacks. *This bug only affects Firefox for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox < 140.

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.

A website could have obscured the fullscreen notification by using a dropdown select input element. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

Insufficient policy enforcement in contacts picker in Google Chrome on Android prior to 96.0.4664.45 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

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)

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.

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 Autofill in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to bypass Autofill restrictions via a crafted HTML page. (Chromium security severity: Low)

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 Autofill in Google Chrome prior to 120.0.6099.62 allowed a remote attacker to bypass Autofill restrictions via a crafted HTML page. (Chromium security severity: Low)

In some instances, the user-agent would allow push requests which lacked a valid VAPID even though the push manager subscription defined one. This could allow empty messages to be sent from unauthorized parties. *This bug only affects Firefox on Android.* This vulnerability affects Firefox < 121.

Inappropriate implementation in Installer in Google Chrome prior to 118.0.5993.70 allowed a local attacker to bypass discretionary access control via a crafted command. (Chromium security severity: Low)

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)

Inappropriate implementation in Autofill in Google Chrome prior to 118.0.5993.70 allowed a remote attacker to bypass autofill restrictions via a crafted HTML page. (Chromium security severity: Low)

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)

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 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 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)

Incorrect security UI in Picture In Picture in Google Chrome prior to 119.0.6045.105 allowed a remote attacker to perform domain spoofing via a crafted local HTML page. (Chromium security severity: Low)

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.

When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text was never shown to the user. This is because the text was interpreted as a MIME message and the first paragraph was always treated as an email header section. A digitally signed text from a different context, such as a signed GIT commit, could be used to spoof an email message. This vulnerability affects Thunderbird < 115.6.

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 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)

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 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)

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 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 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 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)

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 Selection in Google Chrome on Android prior to 134.0.6998.35 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: Low)

Insufficient policy enforcement in Content Security Policy in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass content security policy via a crafted HTML page.