Log in Start free

Vulnerability · Published Jan 7, 2021 · Assigned by mozilla

CVE-2020-26979

Medium 6.1

In plain English

A medium-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)0.7%top 45.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20firefox84.0.1-r0ALPINE-CVE-2020-26979
Alpine:v3.21firefox84.0.1-r0ALPINE-CVE-2020-26979
Alpine:v3.22firefox84.0.1-r0ALPINE-CVE-2020-26979
Alpine:v3.23firefox84.0.1-r0ALPINE-CVE-2020-26979
Alpine:v3.21librewolf84.0.1-r0ALPINE-CVE-2020-26979
Alpine:v3.22librewolf84.0.1-r0ALPINE-CVE-2020-26979
Alpine:v3.23librewolf84.0.1-r0ALPINE-CVE-2020-26979
Alpine:v3.24librewolf84.0.1-r0ALPINE-CVE-2020-26979
Ubuntu:22.04:LTSmozjs78no fix listedUBUNTU-CVE-2020-26979

Affected products (as reported)

VendorProductVersions
Mozilla Firefox unspecified – before 84

References