Mozilla security advisory (AV26-840)
ID: a42584bf-997b-5346-8c90-f935ad6e1561
STIX ID: report--a42584bf-997b-5346-8c90-f935ad6e1561
Feed Name: Canadian Centre for Cyber Security Alerts and Advisories
Threat Score
Mozilla reported vulnerabilities affecting Firefox, Firefox ESR, and Thunderbird as of August 18, 2026; multiple version ranges are listed as impacted and users/administrators are urged to review Mozilla’s advisory link and apply updates as they become available.
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