Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

vulnerability

Arch Linux: Access restriction bypass (CVE-2018-12398)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Feb 28, 2019
Added
Jul 11, 2025
Modified
Mar 25, 2026

Description

A security issue has been found in Firefox versions prior to 63.0, where it is possible to inject stylesheets and bypass Content Security Policy (CSP) by using the reflected URL in some special resource URIs, such as chrome:.

Solution

arch-linux-upgrade-latest

References

    Title
    Rapid7 Labs

    2026 Global Threat Landscape Report

    The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.