DEBIAN-CVE-2023-23603

Advisory lineage Upstream: 1 Downstream: 4
Upstream
CVE-2023-23603
Published: 02 Jun 2023, 17:15
Last modified:28 Apr 2026, 20:25

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Jun 2023, 17:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:25
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected Systems

  • debian•firefox-esr

    < 102.7.0esr-1~deb11u1 | < 102.7.0esr-1 | < 102.7.0esr-1 | < 102.7.0esr-1

  • debian•thunderbird

    < 1:102.8.0-1~deb11u1 | < 1:102.7.1-1 | < 1:102.7.1-1 | < 1:102.7.1-1

References (1)