Rapid7

vulnerability

MFSA2022-17 Firefox: Security Vulnerabilities fixed in Firefox ESR 91.9 (CVE-2022-29916)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:C/I:N/A:N)
Published
May 3, 2022
Added
May 4, 2022
Modified
Mar 27, 2026

Description

Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

Solution

mozilla-firefox-esr-upgrade-91_9
Title
Rapid7 Labs

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