{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-87570", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-09-08T22:41:02.530Z", "datePublished": "2026-09-09T00:09:52.358Z", "dateUpdated": "2026-09-09T00:09:52.358Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "153.0.8010.36", "status": "affected", "lessThan": "153.0.8010.36", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Incorrect authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass site isolation via a crafted file. (Chromium security severity: Medium)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Incorrect authorization", "cweId": "CWE-863"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-09-09T00:09:52.358Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html"}, {"url": "https://issues.chromium.org/issues/517215407"}]}}}

{}

{"affected": [{"affectedData": [{"product": "Chrome", "vendor": "Google", "versions": [{"lessThan": "153.0.8010.36", "status": "affected", "version": "153.0.8010.36", "versionType": "custom"}]}], "source": "chrome-cve-admin@google.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "matchCriteriaId": "7BC1B89D-DEB1-48BD-8602-0869B89600FD", "versionEndExcluding": "153.0.8010.36", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Incorrect authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass site isolation via a crafted file. (Chromium security severity: Medium)"}], "id": "CVE-2026-87570", "lastModified": "2026-09-09T20:18:16.923", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-09-09T01:17:14.723", "references": [{"source": "chrome-cve-admin@google.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html"}, {"source": "chrome-cve-admin@google.com", "tags": ["Permissions Required"], "url": "https://issues.chromium.org/issues/517215407"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "chrome-cve-admin@google.com", "type": "Primary"}]}

{}

{"created": "2026-09-09T07:15:06.366007+00:00", "title": "Incorrect Authorisation Allows Site Isolation Bypass in Chrome", "updated": "2026-09-09T07:15:06.366013+00:00", "vendors": []}