CVE-2024-9397: Mozilla Firefox

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

A missing delay in directory upload UI could have made it possible for an attacker to trick a user into granting permission via clickjacking. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

Affected products

• Mozilla Firefox: before 131.0 (fixed in 131.0)
• Mozilla Firefox ESR: before 128.3.0 (fixed in 128.3.0)
• Mozilla Thunderbird: before 128.3 (fixed in 128.3); version 129.0 only

Published 2024-10-01. Last modified 2026-06-17.