WebExtensions with the "ActiveTab" permission are able to access frames hosted within the active tab even if the frames are cross-origin

A use-after-free vulnerability can occur during font face manipulation when a font face is freed while still in use, resulting in a potentially exploitable crash

A use-after-free vulnerability can occur during mouse event handling due to issues with multiprocess support

A use-after-free vulnerability can occur when manipulating HTML media elements with media streams, resulting in a potentially exploitable crash

A use-after-free vulnerability can occur when the widget listener is holding strong references to browser objects that have previously been freed, resulting in a potentially…

A use-after-free vulnerability can occur when form input elements, focus, and selections are manipulated by script content

A use-after-free vulnerability can occur during XSL transformations when the source document for the transformation is manipulated by script content during the transformation

A use-after-free vulnerability can occur while editing events in form elements on a page, resulting in a potentially exploitable crash

An integer overflow vulnerability in the Skia library when allocating memory for edge builders on some systems with at least 8 GB of RAM

A use-after-free vulnerability can occur when the thread for a Web Worker is freed from memory prematurely instead of from memory in the main thread while cancelling fetch…

A use-after-free vulnerability can occur during WebRTC connections when interacting with the DTMF timers

Memory safety bugs were reported in Firefox 57

Memory safety bugs were reported in Firefox 57 and Firefox ESR 52.5

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

Memory safety bugs were reported in Firefox 56

Memory safety bugs were reported in Firefox 56 and Firefox ESR 52.4

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

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

A use-after-free vulnerability can occur in design mode when image objects are resized if objects referenced during the resizing have been freed from memory

A use-after-free vulnerability can occur when manipulating arrays of Accessible Rich Internet Applications (ARIA) elements within containers through the DOM

Memory safety bugs were reported in Firefox 55

Memory safety bugs were reported in Firefox 55 and Firefox ESR 52.3

A use-after-free vulnerability can occur when an editor DOM node is deleted prematurely during tree traversal while still bound to the document

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

A use-after-free vulnerability can occur while re-computing layout for a "marquee" element during window resizing where the updated style object is freed while still in use

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

A use-after-free vulnerability can occur in the Fetch API when the worker or the associated window are freed when still in use, resulting in a potentially exploitable crash

A buffer overflow will occur when viewing a certificate in the certificate manager if the certificate has an extremely long object identifier (OID)

When an "iframe" has a "sandbox" attribute and its content is specified using "srcdoc", that content does not inherit the containing page's Content Security Policy (CSP) as it…

A buffer overflow can occur when the image renderer attempts to paint non-displayable SVG elements

A buffer overflow can occur when manipulating Accessible Rich Internet Applications (ARIA) attributes within the DOM

A use-after-free vulnerability can occur when reading an image observer during frame reconstruction after the observer has been freed

Memory safety bugs were reported in Firefox 54

Memory safety bugs were reported in Firefox 54, Firefox ESR 52.2, and Thunderbird 52.2

A number of security vulnerabilities in the Graphite 2 library including out-of-bounds reads, buffer overflow reads and writes, and the use of uninitialized memory

A use-after-free vulnerability in IndexedDB when one of its objects is destroyed in memory while a method on it is still being executed

A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Requests (XHR)

A use-after-free vulnerability with content viewer listeners that results in a potentially exploitable crash

A use-after-free vulnerability during video control operations when a "<track>" element holds a reference to an older window if that window has been replaced in the DOM

A use-after-free vulnerability when using an incorrect URL during the reloading of a docshell

A use-after-free vulnerability with the frameloader during tree reconstruction while regenerating CSS layout when attempting to use a node in the tree that no longer exists

Memory safety bugs were reported in Firefox 53

Memory safety bugs were reported in Firefox 53 and Firefox ESR 52.1

Fixed potential buffer overflows in generated Firefox code due to CVE-2016-6354 issue in Flex

During DOM manipulations of the accessibility tree through script, the DOM tree can become out of sync with the accessibility tree, leading to memory corruption and a potentially…

A use-after-free vulnerability in frame selection triggered by a combination of malicious script content and key presses by a user

A buffer overflow in WebGL triggerable by web content, resulting in a potentially exploitable crash

A mechanism to bypass file system access protections in the sandbox using the file system request constructor through an IPC message

An out-of-bounds read when an HTTP/2 connection to a servers sends "DATA" frames with incorrect data content

An out-of-bounds write vulnerability while decoding improperly formed BinHex format archives