CVE-2023-23603
MEDIUMFirefox < 109 and Firefox ESR < 102.7 - Data Exfiltration via Console Log Style Directive
Title source: llmDescription
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.
References (4)
Core 4
Core References
Issue Tracking, Permissions Required, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1800832
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-01/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-02/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-03/
Scores
CVSS v3
6.5
EPSS
0.0022
EPSS Percentile
44.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (3)
mozilla/firefox
< 109.0
mozilla/firefox_esr
< 102.7
mozilla/thunderbird
< 102.7
Published
Jun 02, 2023
Tracked Since
Feb 18, 2026