PT-2026-2651 · Mozilla · Firefox

Elysee Franchuk · Published 2026-01-13 · Updated 2026-02-21 · CVE-2026-0889

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 147

Description A denial-of-service issue exists in the DOM: Service Workers component.

Recommendations Update Firefox to version 147 or later.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

BDU:2026-06199

CVE-2026-0889

OPENSUSE-SU-2026:10046-1

Affected Products

Firefox

References · 36

• https://mozilla.org/security/advisories/mfsa2026-04 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-0889 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-0889 · Security Note
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2026-0518SE47 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2026-01/#CVE-2026-0889 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06199 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-0889 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2026-04 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10046-1 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-01 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-0889 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-0889 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-0889 · Security Note
• https://bugzilla.mozilla.org/show_bug.cgi?id=1999084 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0423SE18MD · Vendor Advisory