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{"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"]}