What’s Vulnerable › Vulnerabilities

CVE-2020-15973

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-03 · updated 2026-06-17

Description

Insufficient policy enforcement in extensions in Google Chrome prior to 86.0.4240.75 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension.

Affected products

• Debian Linux: 10.0
• Fedoraproject Fedora: 31, 32, 33
• Google Chrome: before 86.0.4240.75 — fixed in 86.0.4240.75
• openSUSE Backports Sle: 15.0-sp2

How to fix

Upgrade to a fixed version: Google Chrome 86.0.4240.75. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html
• https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop.html
• https://crbug.com/1106890
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/24QFL4C3AZKMFVL7LVSYMU2DNE5VVUGS/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4GWCWNHTTYOH6HSFUXPGPBB6J6JYZHZE/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M/
• https://www.debian.org/security/2021/dsa-4824
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html
• https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop.html
• https://crbug.com/1106890
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/24QFL4C3AZKMFVL7LVSYMU2DNE5VVUGS/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4GWCWNHTTYOH6HSFUXPGPBB6J6JYZHZE/

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