CVE-2018-6089 Information disclosure in Chrome

What is CVE-2018-6089?

CVE-2018-6089 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-20

Which versions are affected by CVE-2018-6089?

It affects 5 products.

Products include Debian Debian Linux, Google Chrome, Redhat Linux Desktop, Redhat Linux Server, Redhat Linux Workstation.

How do I fix CVE-2018-6089?

Upgrade to a fixed version.

Is CVE-2018-6089 being exploited?

There is no known exploitation of CVE-2018-6089 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-3vh5-vw4x-2894, UBUNTU-CVE-2018-6089.