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Description

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

PUBLISHED Reserved 2026-01-13 | Published 2026-01-13 | Updated 2026-01-15 | Assigner mozilla

Product status

Any version before 147
affected

Any version before 147
affected

Credits

Elysee Franchuk, Caleb Lerch

References

bugzilla.mozilla.org/show_bug.cgi?id=1999084

www.mozilla.org/security/advisories/mfsa2026-01/

www.mozilla.org/security/advisories/mfsa2026-04/

cve.org (CVE-2026-0889)

nvd.nist.gov (CVE-2026-0889)

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