CVE-2022-29916
6.5
MEDIUM
CVSS 3.1
EPSS 0.24%
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.
How to fix CVE-2022-29916
To remediate CVE-2022-29916, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 91.9.0esr-1~deb11u1 or later
- —upgrade to 1:91.9.0-1~deb11u1 or later
Is CVE-2022-29916 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 91.9.0esr-1~deb11u1
- from 0, < 1:91.9.0-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |