CVE-2024-8382
mozilla: Internal event interfaces were exposed to web content when browser EventHandler listener callbacks ran
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 3, 2024
Updated · November 21, 2025
Description
The Mozilla Foundation's Security Advisory: Internal browser event interfaces were exposed to web content when privileged EventHandler listener callbacks ran for those events. Web content that tried to use those interfaces would not be able to use them with elevated privileges, but their presence would indicate certain browser features had been used, such as when a user opened the Dev Tools console.
Statement
Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-497 · Exposure of Sensitive System Information to an Unauthorized Control Sphere