CVE-2026-76033

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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"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "matchCriteriaId": "4B7EB7D9-F687-4AD5-A761-AFB663BA8B31", "versionEndExcluding": "151.0.7922.169", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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)"}, {"lang": "es", "value": "Implementaci\u00f3n inapropiada en CORS en Google Chrome anterior a 151.0.7922.169 permiti\u00f3 a un atacante remoto que hab\u00eda comprometido el proceso de renderizado eludir el aislamiento de sitios a trav\u00e9s de una p\u00e1gina HTML manipulada. (Gravedad de seguridad de Chromium: Alta)"}], "id": "CVE-2026-76033", "lastModified": "2026-10-22T17:09:59.477", "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", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0826575033.html"}, {"source": "chrome-cve-admin@google.com", "tags": ["Permissions Required"], "url": "https://issues.chromium.org/issues/516715010"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Analyzed", "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", "updated": "2026-08-21T17:00:04.133981+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}