CVE-2022-22761
8.8
HIGH
CVSS 3.1
EPSS 0.35%
Description
Web-accessible extension pages (pages with a moz-extension:// scheme) were not correctly enforcing the frame-ancestors directive when it was used in the Web Extension's Content Security Policy. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.
How to fix CVE-2022-22761
To remediate CVE-2022-22761, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 91.6.0esr-1~deb11u1 or later
- —upgrade to 1:91.6.0-1~deb11u1 or later
Is CVE-2022-22761 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 91.6.0esr-1~deb11u1
- from 0, < 1:91.6.0-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |