CVE-2020-26979

MEDIUM

Firefox < 84.0 - URL Spoofing via Address Bar Event Capture

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Exploit, Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1641287%2C1673299

Scores

CVSS v3 6.1
EPSS 0.0025
EPSS Percentile 48.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-601
Status published
Products (1)
mozilla/firefox < 84.0
Published Jan 07, 2021
Tracked Since Feb 18, 2026