{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-0889", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "state": "PUBLISHED", "assignerShortName": "mozilla", "dateReserved": "2026-01-13T13:30:58.498Z", "datePublished": "2026-01-13T13:30:58.675Z", "dateUpdated": "2026-01-15T09:31:15.710Z"}, "containers": {"cna": {"affected": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "147", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "147", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147."}]}], "title": "Denial-of-service in the DOM: Service Workers component", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1999084"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-01/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-04/"}], "credits": [{"lang": "en", "value": "Elysee Franchuk, Caleb Lerch"}], "providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2026-01-15T09:31:15.710Z"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-400", "lang": "en", "description": "CWE-400 Uncontrolled Resource Consumption"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-01-13T20:30:08.189012Z", "id": "CVE-2026-0889", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-13T20:30:28.179Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-0889", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-13T20:30:08.189012Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-13T20:30:23.911Z"}}], "cna": {"title": "Denial-of-service in the DOM: Service Workers component", "credits": [{"lang": "en", "value": "Elysee Franchuk, Caleb Lerch"}], "affected": [{"vendor": "Mozilla", "product": "Firefox", "versions": [{"status": "affected", "version": "unspecified", "lessThan": "147", "versionType": "custom"}]}, {"vendor": "Mozilla", "product": "Thunderbird", "versions": [{"status": "affected", "version": "unspecified", "lessThan": "147", "versionType": "custom"}]}], "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1999084"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-01/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-04/"}], "descriptions": [{"lang": "en", "value": "Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147.", "supportingMedia": [{"type": "text/html", "value": "Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147.", "base64": false}]}], "providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2026-01-15T09:31:15.710Z"}}}, "cveMetadata": {"cveId": "CVE-2026-0889", "state": "PUBLISHED", "dateUpdated": "2026-01-15T09:31:15.710Z", "dateReserved": "2026-01-13T13:30:58.498Z", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "datePublished": "2026-01-13T13:30:58.675Z", "assignerShortName": "mozilla"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "matchCriteriaId": "E06AF540-011D-4249-9815-3A4609DD26D1", "versionEndExcluding": "147.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*", "matchCriteriaId": "47B67C0A-B05F-4212-9255-0446302237A5", "versionEndExcluding": "147.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Denial-of-service in the DOM: Service Workers component. This vulnerability affects Firefox < 147 and Thunderbird < 147."}], "id": "CVE-2026-0889", "lastModified": "2026-01-22T19:09:57.530", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-01-13T14:16:39.437", "references": [{"source": "security@mozilla.org", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1999084"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2026-01/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2026-04/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "firefox: Denial-of-service in the DOM: Service Workers component", "id": "2428964", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428964"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2026-0889", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "rhel10/firefox-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-01-13T13:30:58Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-0889\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-0889\nhttps://www.mozilla.org/security/advisories/mfsa2026-01/#CVE-2026-0889"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Low"}

{"created": "2026-01-14T11:09:20.686209+00:00", "updated": "2026-01-14T11:09:20.686236+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox"]}