CVE-2022-40956
6.1
MEDIUM
CVSS 3.1
EPSS 0.17%
Description
When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
How to fix CVE-2022-40956
To remediate CVE-2022-40956, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 102.3.0esr-1~deb11u1 or later
- —upgrade to 1:102.3.0-1~deb11u1 or later
Is CVE-2022-40956 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 102.3.0esr-1~deb11u1
- from 0, < 1:102.3.0-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |