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CVE-2020-26979

6.1 · MEDIUM

When a user typed a URL in the address bar or the search bar and quickly hit the enter key, a website could sometimes capture that event and then redirect the user before navigation occurred to the…

Published Jan 7, 2021CWE-601EPSS 0.73%

Overview

CVE-2020-26979 is a medium-severity vulnerability. It was published on January 7, 2021 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

When a user typed a URL in the address bar or the search bar and quickly hit the enter key, a website could sometimes capture that event and then redirect the user before navigation occurred to the desired, entered address. To construct a convincing spoof the attacker would have had to guess what the user was typing, perhaps by suggesting it. This vulnerability affects Firefox < 84.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugzilla.mozilla.org/buglist.cgi?bug_id=1641287%2C1673299Refwww.mozilla.org/security/advisories/mfsa2020-54/Refbugzilla.mozilla.org/buglist.cgi?bug_id=1641287%2C1673299Refwww.mozilla.org/security/advisories/mfsa2020-54/

How CyberStrike helps

Frequently asked questions

What is CVE-2020-26979?

CVE-2020-26979 is a medium-severity vulnerability. It was published on January 7, 2021 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2020-26979?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-26979?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-26979?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-26979 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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