{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-76033", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-08-18T19:44:47.455Z", "datePublished": "2026-08-18T20:31:25.299Z", "dateUpdated": "2026-08-19T11:31:52.750Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "151.0.7922.169", "status": "affected", "lessThan": "151.0.7922.169", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in CORS in Google Chrome prior to 151.0.7922.169 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Inappropriate implementation", "cweId": "CWE-20"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-08-18T20:31:25.299Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0826575033.html"}, {"url": "https://issues.chromium.org/issues/516715010"}]}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.2, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-08-19T11:31:48.538691Z", "id": "CVE-2026-76033", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"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": "2026-08-19T11:31:52.750Z"}}]}}

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{"affected": [{"affectedData": [{"product": "Chrome", "vendor": "Google", "versions": [{"lessThan": "151.0.7922.169", "status": "affected", "version": "151.0.7922.169", "versionType": "custom"}]}], "source": "chrome-cve-admin@google.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in CORS in Google Chrome prior to 151.0.7922.169 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)"}], "id": "CVE-2026-76033", "lastModified": "2026-08-19T12:52:26.307", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76033", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-19T11:31:48.538691Z", "version": "2.0.3"}}]}, "published": "2026-08-18T21:18:27.263", "references": [{"source": "chrome-cve-admin@google.com", "url": "https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0826575033.html"}, {"source": "chrome-cve-admin@google.com", "url": "https://issues.chromium.org/issues/516715010"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "chrome-cve-admin@google.com", "type": "Secondary"}]}

{"bugzilla": {"description": "chromium-browser: Google Chrome: Site isolation bypass due to inappropriate CORS implementation", "id": "2518270", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2518270"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-653", "details": ["A flaw was found in Google Chrome's handling of Cross-Origin Resource Sharing (CORS). A remote attacker, who has already compromised the browser's renderer process, could exploit this vulnerability by using a specially crafted HTML page. This could allow the attacker to bypass site isolation, a security feature designed to prevent malicious websites from accessing data from other websites, potentially leading to unauthorized data access."], "name": "CVE-2026-76033", "public_date": "2026-08-18T20:31:25Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-76033\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-76033\nhttps://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0826575033.html\nhttps://issues.chromium.org/issues/516715010"], "statement": "This Important flaw in chromium-browser allows a remote attacker to bypass site isolation after an initial compromise of the browser's renderer process. This could lead to unauthorized access to sensitive data from other websites, significantly undermining a core browser security boundary.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[151.0.7922.169,151.0.7922.169)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Chrome", "source": "cna", "vendor": "Google"}, "product": "chrome", "vendor": "google"}], "created": "2026-08-18T21:30:04.789936+00:00", "title": "Renderer Process Compromise Enables CORS Bypass to Disable Site Isolation", "updated": "2026-08-18T23:30:04.545516+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}