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7.5 High

CVE-2023-4583 When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available…

Description

When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

Affected products and versions

Product Affected versions Fixed in
Firefox 117 earliest → < 117 117
Firefox ESR 115.2 earliest → < 115.2 115.2
Thunderbird 115.2 earliest → < 115.2 115.2

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