Mozilla security advisory (AV26-1131)

Serial number: AV26-1131
Date: November 6, 2026

As of November 3, 2026, Mozilla is affected by a vulnerability in the following product:

• Firefox
  • Prior to 159.0.1

The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.

• Security Vulnerabilities fixed in Firefox 159.0.1
• Mozilla Foundation Security Advisories — Mozilla