Mozilla

A combination of an external SVG image referenced on a page and the coloring of anchor links stored within this image ca

When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprin

If a document's Referrer Policy attribute is set to "no-referrer" sometimes two network requests are made for "<link>" e

JavaScript can be injected into an exported bookmarks file by placing JavaScript code into user-supplied tags in saved b

Control characters prepended before "javascript:" URLs pasted in the addressbar can cause the leading characters to be i

Punycode format text will be displayed for entire qualified international domain names in some instances when a sub-doma

SVG loaded through "<img>" tags can use "<meta>" tags within the SVG data to set cookies for that page. This vulnerabili

The "pingsender" executable used by the Firefox Health Report dynamically loads a system copy of libcurl, which an attac

Mixed content blocking of insecure (HTTP) sub-resources in a secure (HTTPS) document was not correctly applied for resou

A "data:" URL loaded in a new tab did not inherit the Content Security Policy (CSP) of the original page, allowing for b

Some Arabic and Indic vowel marker characters can be combined with Latin characters in a domain name to eclipse the non-

The combined, single character, version of the letter 'i' with any of the potential accents in unicode, such as acute or

A vulnerability where the security wrapper does not deny access to some exposed properties using the deprecated "_expose

The Resource Timing API incorrectly revealed navigations in cross-origin iframes. This is a same-origin policy violation

It is possible to spoof the sender's email address and display an arbitrary sender address to the email recipient. The r

A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" object has been free

Memory safety bugs were reported in Firefox 56. Some of these bugs showed evidence of memory corruption and we presume t

Memory safety bugs were reported in Firefox 56 and Firefox ESR 52.4. Some of these bugs showed evidence of memory corrup

Several fonts on OS X display some Tibetan and Arabic characters as whitespace. When used in the addressbar as part of a

A buffer overflow occurs when drawing and validating elements with the ANGLE graphics library, used for WebGL content. T

The content security policy (CSP) "sandbox" directive did not create a unique origin for the document, causing it to beh

The AES-GCM implementation in WebCrypto API accepts 0-length IV when it should require a length of 1 according to the NI

A vulnerability where WebExtensions can download and attempt to open a file of some non-executable file types. This can

The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or a

A use-after-free vulnerability can occur in design mode when image objects are resized if objects referenced during the

A use-after-free vulnerability can occur when manipulating arrays of Accessible Rich Internet Applications (ARIA) elemen

A spoofing vulnerability can occur when a page switches to fullscreen mode without user notification, allowing a fake ad

WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security che

On pages containing an iframe, the "data:" protocol can be used to create a modal dialog through Javascript that will ha

File downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing an

Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer be

If web content on a page is dragged onto portions of the browser UI, such as the tab bar, links can be opened that other

Memory safety bugs were reported in Firefox 55. Some of these bugs showed evidence of memory corruption and we presume t

Memory safety bugs were reported in Firefox 55 and Firefox ESR 52.3. Some of these bugs showed evidence of memory corrup

A use-after-free vulnerability can occur when an editor DOM node is deleted prematurely during tree traversal while stil

A content security policy (CSP) "frame-ancestors" directive containing origins with paths allows for comparisons against

A mechanism that uses AppCache to hijack a URL in a domain using fallback by serving the files from a sub-path on the do

A use-after-free vulnerability can occur when the layer manager is freed too early when rendering specific SVG content,

During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for la

The destructor function for the "WindowsDllDetourPatcher" class can be re-purposed by malicious code in concert with ano

When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored. This re

A use-after-free vulnerability can occur when manipulating the DOM during the resize event of an image element. If these

A use-after-free vulnerability can occur while re-computing layout for a "marquee" element during window resizing where

A use-after-free vulnerability can occur in WebSockets when the object holding the connection is freed before the discon

JavaScript in the "about:webrtc" page is not sanitized properly being assigned to "innerHTML". Data on this page is supp

The Developer Tools feature suffers from a XUL injection vulnerability due to improper sanitization of the web page sour

Response header name interning does not have same-origin protections and these headers are stored in a global registry.

On Windows systems, the logger run by the Windows updater deletes the file "update.log" before it runs in order to write

On Linux systems, if the content process is compromised, the sandbox broker will allow files to be truncated even though

A use-after-free vulnerability can occur in the Fetch API when the worker or the associated window are freed when still