CVSS 3.1 Score 6.1 of 10 (medium)


Published Dec 19, 2023
Updated: Feb 2, 2024
CWE ID 1021


CVE-2023-6867 is a cyber vulnerability that affects Firefox ESR versions prior to 115.6 and Firefox versions prior to 121. It is classified as a medium severity vulnerability and has a base score of 6.1 according to The vulnerability allows an attacker to surprise users by luring them to click where the permission grant button would be about to appear, due to the timing of a button click causing a popup to disappear being approximately the same length as the anti-clickjacking delay on permission prompts. The exploit requires network access and user interaction, but no privileges are required. The impact on integrity and confidentiality is low, and there is no availability impact. Remediation for this vulnerability involves updating Firefox ESR to version 115.6 or later, or updating Firefox to version 121 or later.

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