{"id":"CVE-2026-87589","title":"Incorrect authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass system access restrictions via a crafted HTML page","summary":"Incorrect authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass system access restrictions via a crafted HTML page. (Chromium security severity…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","cwe":["CWE-863"],"vendor":"google","product":"chrome","affected":["chrome < 153.0.8010.36"],"patched":["chrome 153.0.8010.36"],"published":"2026-09-09","updated":"2026-09-11","sourceUpdated":"2026-09-11T14:28:57.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87589","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/518002426","label":"chrome-cve-admin@google.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87589.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-87589"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-87589"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00202,"epssPercentile":0.10383,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-10T14:00:39.866533Z"},"scores":{"nvd":6.5,"vendor":5.4,"adp":6.5},"ingestedAt":"2026-09-09T01:17:17.508Z","slug":"CVE-2026-87589","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 to bypass system access restrictions via a crafted HTML page. (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-2026-87589.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202489,"id":"CVE-2026-87589","ts":1789400085410,"field":"cvss","old":null,"new":"6.5"},{"seq":202488,"id":"CVE-2026-87589","ts":1789400085410,"field":"severity","old":"none","new":"medium"},{"seq":201216,"id":"CVE-2026-87589","ts":1789397620339,"field":"cvss","old":"6.5","new":null},{"seq":201215,"id":"CVE-2026-87589","ts":1789397620339,"field":"severity","old":"medium","new":"none"},{"seq":199909,"id":"CVE-2026-87589","ts":1789395578286,"field":"cvss","old":null,"new":"6.5"},{"seq":199908,"id":"CVE-2026-87589","ts":1789395578286,"field":"severity","old":"none","new":"medium"},{"seq":199150,"id":"CVE-2026-87589","ts":1789392260404,"field":"cvss","old":"6.5","new":null},{"seq":199149,"id":"CVE-2026-87589","ts":1789392260404,"field":"severity","old":"medium","new":"none"},{"seq":197483,"id":"CVE-2026-87589","ts":1789384296932,"field":"cvss","old":null,"new":"6.5"},{"seq":197482,"id":"CVE-2026-87589","ts":1789384296932,"field":"severity","old":"none","new":"medium"},{"seq":196757,"id":"CVE-2026-87589","ts":1789383774805,"field":"cvss","old":"6.5","new":null},{"seq":196756,"id":"CVE-2026-87589","ts":1789383774805,"field":"severity","old":"medium","new":"none"},{"seq":195661,"id":"CVE-2026-87589","ts":1789380578316,"field":"cvss","old":null,"new":"6.5"},{"seq":195660,"id":"CVE-2026-87589","ts":1789380578316,"field":"severity","old":"none","new":"medium"},{"seq":194612,"id":"CVE-2026-87589","ts":1789378789552,"field":"cvss","old":"6.5","new":null},{"seq":194611,"id":"CVE-2026-87589","ts":1789378789552,"field":"severity","old":"medium","new":"none"},{"seq":193399,"id":"CVE-2026-87589","ts":1789376520984,"field":"cvss","old":null,"new":"6.5"},{"seq":193398,"id":"CVE-2026-87589","ts":1789376520984,"field":"severity","old":"none","new":"medium"},{"seq":192186,"id":"CVE-2026-87589","ts":1789373639361,"field":"cvss","old":"6.5","new":null},{"seq":192185,"id":"CVE-2026-87589","ts":1789373639361,"field":"severity","old":"medium","new":"none"},{"seq":190971,"id":"CVE-2026-87589","ts":1789369487961,"field":"cvss","old":null,"new":"6.5"},{"seq":190970,"id":"CVE-2026-87589","ts":1789369487961,"field":"severity","old":"none","new":"medium"},{"seq":189758,"id":"CVE-2026-87589","ts":1789368460932,"field":"cvss","old":"6.5","new":null},{"seq":189757,"id":"CVE-2026-87589","ts":1789368460932,"field":"severity","old":"medium","new":"none"},{"seq":188541,"id":"CVE-2026-87589","ts":1789365236895,"field":"cvss","old":null,"new":"6.5"},{"seq":188540,"id":"CVE-2026-87589","ts":1789365236895,"field":"severity","old":"none","new":"medium"},{"seq":187328,"id":"CVE-2026-87589","ts":1789363480269,"field":"cvss","old":"6.5","new":null},{"seq":187327,"id":"CVE-2026-87589","ts":1789363480269,"field":"severity","old":"medium","new":"none"},{"seq":186114,"id":"CVE-2026-87589","ts":1789361235565,"field":"cvss","old":null,"new":"6.5"},{"seq":186113,"id":"CVE-2026-87589","ts":1789361235565,"field":"severity","old":"none","new":"medium"},{"seq":184901,"id":"CVE-2026-87589","ts":1789358377307,"field":"cvss","old":"6.5","new":null},{"seq":184900,"id":"CVE-2026-87589","ts":1789358377307,"field":"severity","old":"medium","new":"none"},{"seq":183150,"id":"CVE-2026-87589","ts":1789354323421,"field":"cvss","old":null,"new":"6.5"},{"seq":183149,"id":"CVE-2026-87589","ts":1789354323421,"field":"severity","old":"none","new":"medium"},{"seq":181943,"id":"CVE-2026-87589","ts":1789353335248,"field":"cvss","old":"6.5","new":null},{"seq":181942,"id":"CVE-2026-87589","ts":1789353335248,"field":"severity","old":"medium","new":"none"},{"seq":180736,"id":"CVE-2026-87589","ts":1789350290892,"field":"cvss","old":null,"new":"6.5"},{"seq":180735,"id":"CVE-2026-87589","ts":1789350290892,"field":"severity","old":"none","new":"medium"},{"seq":179529,"id":"CVE-2026-87589","ts":1789348308569,"field":"cvss","old":"6.5","new":null},{"seq":179528,"id":"CVE-2026-87589","ts":1789348308569,"field":"severity","old":"medium","new":"none"},{"seq":178322,"id":"CVE-2026-87589","ts":1789346377895,"field":"cvss","old":null,"new":"6.5"},{"seq":178321,"id":"CVE-2026-87589","ts":1789346377895,"field":"severity","old":"none","new":"medium"},{"seq":177115,"id":"CVE-2026-87589","ts":1789343188523,"field":"cvss","old":"6.5","new":null},{"seq":177114,"id":"CVE-2026-87589","ts":1789343188523,"field":"severity","old":"medium","new":"none"},{"seq":175232,"id":"CVE-2026-87589","ts":1789334884563,"field":"cvss","old":null,"new":"6.5"},{"seq":175231,"id":"CVE-2026-87589","ts":1789334884563,"field":"severity","old":"none","new":"medium"},{"seq":174027,"id":"CVE-2026-87589","ts":1789333703667,"field":"cvss","old":"6.5","new":null},{"seq":174026,"id":"CVE-2026-87589","ts":1789333703667,"field":"severity","old":"medium","new":"none"},{"seq":172841,"id":"CVE-2026-87589","ts":1789331096895,"field"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