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8.8 High

CVE-2023-25729 Permission prompts for opening external schemes were only shown for ContentPrincipals resulting in extensions being able…

Description

Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code> resulting in extensions being able to open them without user interaction via <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or interacting with software already installed on the system. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Affected products and versions

Product Affected versions Fixed in
Firefox 110 earliest → < 110 110
Thunderbird 102.8 earliest → < 102.8 102.8
Firefox ESR 102.8 earliest → < 102.8 102.8

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