Mozilla security advisory (AV26-028)

Serial number: AV26-028
Date: January 14, 2026

On January 13, 2026, Mozilla published security advisories to address vulnerabilities in the following products:

  • Firefox ESR – versions prior to 140.7
  • Firefox ESR – versions prior to 115.32
  • Firefox – versions prior to 147

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.

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