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HIGHCVE-2026-0889Published Modified CNA mozilla

CVE-2026-0889: Denial-of-service in the DOM: Service Workers component

Denial-of-service in the DOM: Service Workers component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
147
Affected Products
2

Fix available

147
Affected packages
  • Mozilla / Firefox
    Fixed in 147
  • Mozilla / Thunderbird
    Fixed in 147
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
CVE-2026-0889: Denial-of-service in the DOM: Service Workers component | HarborGuard CVE