NetSight
medium6.5

CVE-2022-29916

Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables.

Impact

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.

Affected products

VendorProductAffected versions
MozillaFirefox
before 100.0
MozillaFirefox Esr
before 91.9
MozillaThunderbird
before 91.9

Weakness classification

References