CVE-2018-6089: Debian Linux

Medium severity, CVSS 6.5. EPSS: 1.6% chance of exploitation in the next 30 days.

A lack of CORS checks, after a Service Worker redirected to a cross-origin PDF, in Service Worker in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to leak limited cross-origin data via a crafted HTML page.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Google Chrome: before 66.0.3359.117 (fixed in 66.0.3359.117)
• Red Hat Linux Desktop: version 6.0 only
• Red Hat Linux Server: version 6.0 only
• Red Hat Linux Workstation: version 6.0 only

Published 2018-12-04. Last modified 2026-06-17.