{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-12294", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "state": "PUBLISHED", "assignerShortName": "mozilla", "dateReserved": "2026-06-15T15:08:07.929Z", "datePublished": "2026-06-16T11:52:27.895Z", "dateUpdated": "2026-06-16T11:52:27.895Z"}, "containers": {"cna": {"affected": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"status": "unaffected", "version": "115.37", "lessThanOrEqual": "115.*", "versionType": "rpm"}, {"status": "unaffected", "version": "140.12", "lessThanOrEqual": "140.*", "versionType": "rpm"}, {"status": "unaffected", "version": "152", "lessThanOrEqual": "*", "versionType": "rpm"}]}], "descriptions": [{"lang": "en", "value": "Sandbox escape in the DOM: Workers component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Sandbox escape in the DOM: Workers component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37."}]}], "title": "Sandbox escape in the DOM: Workers component", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2039873"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-57/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-58/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2026-59/"}], "credits": [{"lang": "en", "value": "Quy Pham"}], "providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2026-06-16T11:52:27.895Z"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Sandbox escape in the DOM: Workers component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, and Firefox ESR 115.37."}], "id": "CVE-2026-12294", "lastModified": "2026-06-16T13:16:29.643", "metrics": {}, "published": "2026-06-16T13:16:29.643", "references": [{"source": "security@mozilla.org", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2039873"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2026-57/"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2026-58/"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2026-59/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Received"}

{}

{}