CVE-2023-23602
6.5
MEDIUM
CVSS 3.1
EPSS 0.14%
Description
A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
How to fix CVE-2023-23602
To remediate CVE-2023-23602, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 102.7.0esr-1~deb11u1 or later
- —upgrade to 1:102.8.0-1~deb11u1 or later
Is CVE-2023-23602 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 102.7.0esr-1~deb11u1
- from 0, < 1:102.8.0-1~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:N/I:H/A:N |