{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74956", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "state": "PUBLISHED", "assignerShortName": "mozilla", "dateReserved": "2026-08-17T11:58:12.497Z", "datePublished": "2026-08-18T12:23:37.723Z", "dateUpdated": "2026-08-18T12:23:37.723Z"}, "containers": {"cna": {"affected": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"status": "unaffected", "version": "153.1", "lessThanOrEqual": "153.*", "versionType": "rpm"}, {"status": "unaffected", "version": "154", "lessThanOrEqual": "*", "versionType": "rpm"}]}], "descriptions": [{"lang": "en", "value": "Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1."}]}], "title": "Same-origin policy bypass in the DOM: Service Workers component", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2032406"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"}], "credits": [{"lang": "en", "value": "pakhunov.anton.n"}], "providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2026-08-18T12:23:37.723Z"}}}}

{}

{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "153.*", "status": "unaffected", "version": "153.1", "versionType": "rpm"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "154", "versionType": "rpm"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1."}], "id": "CVE-2026-74956", "lastModified": "2026-08-18T13:17:32.623", "metrics": {}, "published": "2026-08-18T13:17:32.623", "references": [{"source": "[email protected]", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2032406"}, {"source": "[email protected]", "url": "https://www.mozilla.org/security/advisories/mfsa2026-74/"}, {"source": "[email protected]", "url": "https://www.mozilla.org/security/advisories/mfsa2026-77/"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received"}

{}

{}