CVE-2023-23603
6.5
MEDIUM
CVSS 3.1
EPSS 0.22%
Description
Regular expressions used to filter out forbidden properties and values from style directives in calls to `console.log` weren't accounting for external URLs. Data could then be potentially exfiltrated from the browser. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
How to fix CVE-2023-23603
To remediate CVE-2023-23603, 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-2023-23603 being exploited?
Low — EPSS is 0.2%, 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:H/I:N/A:N |