Vulnerabilities

If right-to-left text is used in the addressbar with left-to-right alignment, it is possible in some circumstances to scroll this text to spoof the displayed URL.

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 exploitable crash when these references are us…

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.

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 during WebRTC connections when interacting with the DTMF timers.

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