CVE-2026-0889
published 2026-01-13CVE-2026-0889: Denial-of-service in the DOM: Service Workers component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.54%
41.6th percentile
Denial-of-service in the DOM: Service Workers component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 147.0-1 (sid) | firefox 147.0-1 (sid) |
| mozilla | firefox | < 147.0 | 147.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 147.0 | 147.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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VulDB
Mozilla Firefox up to 146 Service Workers denial of service (EUVD-2026-2081 / WID-SEC-2026-0090)
vuldb·2026-06-12·CVSS 7.5
CVE-2026-0889 [HIGH] Mozilla Firefox up to 146 Service Workers denial of service (EUVD-2026-2081 / WID-SEC-2026-0090)
A vulnerability identified as problematic has been detected in Mozilla Firefox up to 146. Impacted is an unknown function of the component Service Workers. Performing a manipulation results in denial of service.
This vulnerability is reported as CVE-2026-0889. The attack is possible to be carried out remotely. No exploit exists.
You should upgrade the affected component.
OSV
CVE-2026-0889: Denial-of-service in the DOM: Service Workers component
osv·2026-01-13·CVSS 7.5
CVE-2026-0889 [HIGH] CVE-2026-0889: Denial-of-service in the DOM: Service Workers component
Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147.
GHSA
GHSA-4m35-v3c2-29x8: Denial-of-service in the DOM: Service Workers component
ghsa_unreviewed·2026-01-13
CVE-2026-0889 [HIGH] CWE-400 GHSA-4m35-v3c2-29x8: Denial-of-service in the DOM: Service Workers component
Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147.
Red Hat
firefox: Denial-of-service in the DOM: Service Workers component
vendor_redhat·2026-01-13·CVSS 7.5
CVE-2026-0889 [HIGH] firefox: Denial-of-service in the DOM: Service Workers component
firefox: Denial-of-service in the DOM: Service Workers component
Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Denial-of-service in the DOM: Service Workers component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: firefox (Red Hat Enterprise Linux 6) - Not affected
Package: firefox (Red Hat Enterprise Linux 7) - Not affected
Package: firefox (Red Hat Enterprise Linux 8) - Not affecte
Debian
CVE-2026-0889: firefox - Denial-of-service in the DOM: Service Workers component. This vulnerability affe...
vendor_debian·2026·CVSS 7.5
CVE-2026-0889 [HIGH] CVE-2026-0889: firefox - Denial-of-service in the DOM: Service Workers component. This vulnerability affe...
Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147.
Scope: local
sid: resolved (fixed in 147.0-1)
Mozilla
Mozilla Foundation Security Advisory 2026-04: CVE-2026-0889
vendor_mozilla·CVSS 7.5
CVE-2026-0889 [HIGH] Mozilla Foundation Security Advisory 2026-04: CVE-2026-0889
Mozilla Foundation Security Advisory 2026-04
CVE: CVE-2026-0889
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 147
Mozilla
Mozilla Foundation Security Advisory 2026-01: CVE-2026-0889
vendor_mozilla·CVSS 7.5
CVE-2026-0889 [HIGH] Mozilla Foundation Security Advisory 2026-01: CVE-2026-0889
Mozilla Foundation Security Advisory 2026-01
CVE: CVE-2026-0889
Product: Firefox
Impact: moderate
Fixed in: Firefox 147
No detection rules found.
No public exploits indexed.
2026-01-13
Published