Vulnerabilities

A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory.

The JSON viewer in the Developer Tools uses insecure methods to create a communication channel for copying and viewing JSON or HTTP headers data, allowing for potential privilege escalation.

WebExtension scripts can use the "data:" protocol to affect pages loaded by other web extensions using this protocol, leading to potential data disclosure or privilege escalation in affected extensions.

URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain name spoofing attacks in the location bar.

A potential use-after-free found through fuzzing during DOM manipulation of SVG content.

Hashed codes of JavaScript objects are shared between pages.

Use-after-free while manipulating XSL in XSLT documents.

JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks.

Memory safety bugs were reported in Firefox 50.1 and Firefox ESR 45.6.