CVE-2020-15983 Security feature bypass in Chrome

What is CVE-2020-15983?

CVE-2020-15983 is a high-severity vulnerability in Debian Debian Linux, published on 3 Nov 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Insufficient data validation in webUI in Google Chrome on ChromeOS prior to 86.0.4240.75 allowed a local attacker to bypass content security policy via a crafted HTML page.

Weakness: CWE-20

Which versions are affected by CVE-2020-15983?

It affects 4 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Google Chrome, Opensuse Backports Sle.

How do I fix CVE-2020-15983?

Upgrade to a fixed version.

Is CVE-2020-15983 being exploited?

There is no known exploitation of CVE-2020-15983 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 DEBIAN-CVE-2020-15983, GHSA-fc8q-j297-rjx7, UBUNTU-CVE-2020-15983.