Vulnerabilities

A potentially exploitable crash in "EnumerateSubDocuments" while adding or removing sub-documents.

An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific contexts.

The Pocket toolbar button, once activated, listens for events fired from it's own pages but does not verify the origin of incoming events.

HTML tags received from the Pocket server will be processed without sanitization and any JavaScript code executed will be run in the "about:pocket-saved" (unprivileged) page, giving it access to Pocket's messaging API th…

External resources that should be blocked when loaded by SVG images can bypass security restrictions through the use of "data:" URLs.

Use-after-free while manipulating DOM events and removing audio elements due to errors in the handling of node adoption.

Use-after-free resulting in potentially exploitable crash when manipulating DOM subtrees in the Editor.

Memory corruption resulting in a potentially exploitable crash during WebGL functions using a vector constructor with a varying array within libGLES.

Event handlers on "marquee" elements were executed despite a strict Content Security Policy (CSP) that disallowed inline JavaScript.

Memory safety bugs were reported in Thunderbird 45.5.