{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78903", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-08-25T06:03:59.078Z", "datePublished": "2026-08-25T20:10:37.564Z", "dateUpdated": "2026-08-25T20:10:37.564Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "152.0.7977.65", "status": "affected", "lessThan": "152.0.7977.65", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Incomplete cleanup in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Incomplete cleanup", "cweId": "CWE-459"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-08-25T20:10:37.564Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html"}, {"url": "https://issues.chromium.org/issues/518078552"}]}}}

{}

{"affected": [{"affectedData": [{"product": "Chrome", "vendor": "Google", "versions": [{"lessThan": "152.0.7977.65", "status": "affected", "version": "152.0.7977.65", "versionType": "custom"}]}], "source": "chrome-cve-admin@google.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Incomplete cleanup in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)"}], "id": "CVE-2026-78903", "lastModified": "2026-08-25T21:17:47.633", "metrics": {}, "published": "2026-08-25T21:17:47.633", "references": [{"source": "chrome-cve-admin@google.com", "url": "https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html"}, {"source": "chrome-cve-admin@google.com", "url": "https://issues.chromium.org/issues/518078552"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-459"}], "source": "chrome-cve-admin@google.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[152.0.7977.65,152.0.7977.65)"}}], "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": "2026-08-25T21:45:03.149865+00:00", "title": "Site Isolation Bypass via Incomplete Cleanup in Google Chrome", "updated": "2026-08-25T22:45:06.474961+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}