Description
A malicious website could have learned the size of a cross-origin resource that supported Range requests. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.
References (4)
Scores
CVSS v3
9.8
EPSS
0.0023
EPSS Percentile
45.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-942
Status
published
Products (3)
mozilla/firefox
< 101
mozilla/firefox_esr
< 91.10
mozilla/thunderbird
< 91.10
Published
Dec 22, 2022
Tracked Since
Feb 18, 2026