CVE-2018-6109 Information disclosure in Chrome

What is CVE-2018-6109?

CVE-2018-6109 is a medium-severity vulnerability in Debian Debian Linux, published on 9 Jan 2019. 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

readAsText() can indefinitely read the file picked by the user, rather than only once at the time the file is picked in File API in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to access data on the user file system without explicit consent via a crafted HTML page.

Weakness: CWE-200

Which versions are affected by CVE-2018-6109?

It affects 5 products.

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

How do I fix CVE-2018-6109?

Upgrade to a fixed version.

Is CVE-2018-6109 being exploited?

There is no known exploitation of CVE-2018-6109 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-pcp9-rq8r-pwrj, UBUNTU-CVE-2018-6109.