{"id":"CVE-2026-87570","title":"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","summary":"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 s…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-863"],"vendor":"google","product":"chrome","affected":["chrome < 153.0.8010.36"],"patched":["chrome 153.0.8010.36"],"published":"2026-09-09","updated":"2026-09-10","sourceUpdated":"2026-09-10T16:18:06.377","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87570","references":[{"url":"https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html","label":"chrome-cve-admin@google.com"},{"url":"https://issues.chromium.org/issues/517215407","label":"chrome-cve-admin@google.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87570.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-87570"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-87570"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T15:01:38.085519Z"},"epss":0.00226,"epssPercentile":0.13592,"scores":{"nvd":8.8,"vendor":7.2,"adp":8.8},"ingestedAt":"2026-09-09T01:17:17.508Z","slug":"CVE-2026-87570","body":"## Overview\n\nIncorrect 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)\n\n## Affected\n\n- `chrome < 153.0.8010.36`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `chrome 153.0.8010.36`\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87570.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202450,"id":"CVE-2026-87570","ts":1789400076024,"field":"cvss","old":null,"new":"8.8"},{"seq":202449,"id":"CVE-2026-87570","ts":1789400076024,"field":"severity","old":"none","new":"high"},{"seq":201177,"id":"CVE-2026-87570","ts":1789397620195,"field":"cvss","old":"8.8","new":null},{"seq":201176,"id":"CVE-2026-87570","ts":1789397620195,"field":"severity","old":"high","new":"none"},{"seq":199870,"id":"CVE-2026-87570","ts":1789395578154,"field":"cvss","old":null,"new":"8.8"},{"seq":199869,"id":"CVE-2026-87570","ts":1789395578154,"field":"severity","old":"none","new":"high"},{"seq":199111,"id":"CVE-2026-87570","ts":1789392260270,"field":"cvss","old":"8.8","new":null},{"seq":199110,"id":"CVE-2026-87570","ts":1789392260270,"field":"severity","old":"high","new":"none"},{"seq":197444,"id":"CVE-2026-87570","ts":1789384296813,"field":"cvss","old":null,"new":"8.8"},{"seq":197443,"id":"CVE-2026-87570","ts":1789384296813,"field":"severity","old":"none","new":"high"},{"seq":196718,"id":"CVE-2026-87570","ts":1789383772312,"field":"cvss","old":"8.8","new":null},{"seq":196717,"id":"CVE-2026-87570","ts":1789383772312,"field":"severity","old":"high","new":"none"},{"seq":195622,"id":"CVE-2026-87570","ts":1789380578188,"field":"cvss","old":null,"new":"8.8"},{"seq":195621,"id":"CVE-2026-87570","ts":1789380578188,"field":"severity","old":"none","new":"high"},{"seq":194573,"id":"CVE-2026-87570","ts":1789378789421,"field":"cvss","old":"8.8","new":null},{"seq":194572,"id":"CVE-2026-87570","ts":1789378789421,"field":"severity","old":"high","new":"none"},{"seq":193360,"id":"CVE-2026-87570","ts":1789376520841,"field":"cvss","old":null,"new":"8.8"},{"seq":193359,"id":"CVE-2026-87570","ts":1789376520841,"field":"severity","old":"none","new":"high"},{"seq":192147,"id":"CVE-2026-87570","ts":1789373639227,"field":"cvss","old":"8.8","new":null},{"seq":192146,"id":"CVE-2026-87570","ts":1789373639227,"field":"severity","old":"high","new":"none"},{"seq":190932,"id":"CVE-2026-87570","ts":1789369487806,"field":"cvss","old":null,"new":"8.8"},{"seq":190931,"id":"CVE-2026-87570","ts":1789369487806,"field":"severity","old":"none","new":"high"},{"seq":189719,"id":"CVE-2026-87570","ts":1789368460803,"field":"cvss","old":"8.8","new":null},{"seq":189718,"id":"CVE-2026-87570","ts":1789368460803,"field":"severity","old":"high","new":"none"},{"seq":188502,"id":"CVE-2026-87570","ts":1789365236768,"field":"cvss","old":null,"new":"8.8"},{"seq":188501,"id":"CVE-2026-87570","ts":1789365236768,"field":"severity","old":"none","new":"high"},{"seq":187289,"id":"CVE-2026-87570","ts":1789363480138,"field":"cvss","old":"8.8","new":null},{"seq":187288,"id":"CVE-2026-87570","ts":1789363480138,"field":"severity","old":"high","new":"none"},{"seq":186075,"id":"CVE-2026-87570","ts":1789361235421,"field":"cvss","old":null,"new":"8.8"},{"seq":186074,"id":"CVE-2026-87570","ts":1789361235421,"field":"severity","old":"none","new":"high"},{"seq":184862,"id":"CVE-2026-87570","ts":1789358377163,"field":"cvss","old":"8.8","new":null},{"seq":184861,"id":"CVE-2026-87570","ts":1789358377163,"field":"severity","old":"high","new":"none"},{"seq":183111,"id":"CVE-2026-87570","ts":1789354323273,"field":"cvss","old":null,"new":"8.8"},{"seq":183110,"id":"CVE-2026-87570","ts":1789354323273,"field":"severity","old":"none","new":"high"},{"seq":181904,"id":"CVE-2026-87570","ts":1789353335118,"field":"cvss","old":"8.8","new":null},{"seq":181903,"id":"CVE-2026-87570","ts":1789353335118,"field":"severity","old":"high","new":"none"},{"seq":180697,"id":"CVE-2026-87570","ts":1789350290762,"field":"cvss","old":null,"new":"8.8"},{"seq":180696,"id":"CVE-2026-87570","ts":1789350290762,"field":"severity","old":"none","new":"high"},{"seq":179490,"id":"CVE-2026-87570","ts":1789348308421,"field":"cvss","old":"8.8","new":null},{"seq":179489,"id":"CVE-2026-87570","ts":1789348308421,"field":"severity","old":"high","new":"none"},{"seq":178283,"id":"CVE-2026-87570","ts":1789346377759,"field":"cvss","old":null,"new":"8.8"},{"seq":178282,"id":"CVE-2026-87570","ts":1789346377759,"field":"severity","old":"none","new":"high"},{"seq":177076,"id":"CVE-2026-87570","ts":1789343188365,"field":"cvss","old":"8.8","new":null},{"seq":177075,"id":"CVE-2026-87570","ts":1789343188365,"field":"severity","old":"high","new":"none"},{"seq":175193,"id":"CVE-2026-87570","ts":1789334884417,"field":"cvss","old":null,"new":"8.8"},{"seq":175192,"id":"CVE-2026-87570","ts":1789334884417,"field":"severity","old":"none","new":"high"},{"seq":173988,"id":"CVE-2026-87570","ts":1789333703535,"field":"cvss","old":"8.8","new":null},{"seq":173987,"id":"CVE-2026-87570","ts":1789333703535,"field":"severity","old":"high","new":"none"},{"seq":172802,"id":"CVE-2026-87570","ts":1789331096768,"field":"cvss","old":null,"new":"8.8"},{"seq":172801,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