CVE-2019-12383: Torproject Tor Browser

Medium severity, CVSS 4.3. EPSS: 2.2% chance of exploitation in the next 30 days.

Tor Browser before 8.0.1 has an information exposure vulnerability. It allows remote attackers to detect the browser's UI locale by measuring a button width, even if the user has a "Don't send my language" setting.

Affected products

• Torproject Tor Browser: before 8.0.1 (fixed in 8.0.1)

Published 2019-05-28. Last modified 2026-06-17.