{"id":"CVE-2026-87543","title":"Missing authorization in Core in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page","summary":"Missing authorization in Core in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","cwe":["CWE-862"],"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":"2026-09-10T20:17:30.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87543","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/502452118","label":"chrome-cve-admin@google.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87543.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-87543"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-87543"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-10T18:33:50.419758Z"},"epss":0.00189,"epssPercentile":0.08769,"scores":{"nvd":4.3,"vendor":2.8,"adp":4.3},"ingestedAt":"2026-09-09T01:17:17.506Z","slug":"CVE-2026-87543","body":"## Overview\n\nMissing authorization in Core in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)\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-2026-87543.json)","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202396,"id":"CVE-2026-87543","ts":1789400070967,"field":"cvss","old":null,"new":"4.3"},{"seq":202395,"id":"CVE-2026-87543","ts":1789400070967,"field":"severity","old":"none","new":"medium"},{"seq":201123,"id":"CVE-2026-87543","ts":1789397619989,"field":"cvss","old":"4.3","new":null},{"seq":201122,"id":"CVE-2026-87543","ts":1789397619989,"field":"severity","old":"medium","new":"none"},{"seq":199816,"id":"CVE-2026-87543","ts":1789395577963,"field":"cvss","old":null,"new":"4.3"},{"seq":199815,"id":"CVE-2026-87543","ts":1789395577963,"field":"severity","old":"none","new":"medium"},{"seq":199057,"id":"CVE-2026-87543","ts":1789392260091,"field":"cvss","old":"4.3","new":null},{"seq":199056,"id":"CVE-2026-87543","ts":1789392260091,"field":"severity","old":"medium","new":"none"},{"seq":197390,"id":"CVE-2026-87543","ts":1789384296625,"field":"cvss","old":null,"new":"4.3"},{"seq":197389,"id":"CVE-2026-87543","ts":1789384296625,"field":"severity","old":"none","new":"medium"},{"seq":196664,"id":"CVE-2026-87543","ts":1789383768777,"field":"cvss","old":"4.3","new":null},{"seq":196663,"id":"CVE-2026-87543","ts":1789383768777,"field":"severity","old":"medium","new":"none"},{"seq":195568,"id":"CVE-2026-87543","ts":1789380578005,"field":"cvss","old":null,"new":"4.3"},{"seq":195567,"id":"CVE-2026-87543","ts":1789380578005,"field":"severity","old":"none","new":"medium"},{"seq":194519,"id":"CVE-2026-87543","ts":1789378789234,"field":"cvss","old":"4.3","new":null},{"seq":194518,"id":"CVE-2026-87543","ts":1789378789234,"field":"severity","old":"medium","new":"none"},{"seq":193306,"id":"CVE-2026-87543","ts":1789376520647,"field":"cvss","old":null,"new":"4.3"},{"seq":193305,"id":"CVE-2026-87543","ts":1789376520647,"field":"severity","old":"none","new":"medium"},{"seq":192093,"id":"CVE-2026-87543","ts":1789373639009,"field":"cvss","old":"4.3","new":null},{"seq":192092,"id":"CVE-2026-87543","ts":1789373639009,"field":"severity","old":"medium","new":"none"},{"seq":190878,"id":"CVE-2026-87543","ts":1789369487542,"field":"cvss","old":null,"new":"4.3"},{"seq":190877,"id":"CVE-2026-87543","ts":1789369487542,"field":"severity","old":"none","new":"medium"},{"seq":189665,"id":"CVE-2026-87543","ts":1789368460613,"field":"cvss","old":"4.3","new":null},{"seq":189664,"id":"CVE-2026-87543","ts":1789368460613,"field":"severity","old":"medium","new":"none"},{"seq":188448,"id":"CVE-2026-87543","ts":1789365236571,"field":"cvss","old":null,"new":"4.3"},{"seq":188447,"id":"CVE-2026-87543","ts":1789365236571,"field":"severity","old":"none","new":"medium"},{"seq":187235,"id":"CVE-2026-87543","ts":1789363479952,"field":"cvss","old":"4.3","new":null},{"seq":187234,"id":"CVE-2026-87543","ts":1789363479952,"field":"severity","old":"medium","new":"none"},{"seq":186021,"id":"CVE-2026-87543","ts":1789361235211,"field":"cvss","old":null,"new":"4.3"},{"seq":186020,"id":"CVE-2026-87543","ts":1789361235211,"field":"severity","old":"none","new":"medium"},{"seq":184808,"id":"CVE-2026-87543","ts":1789358376951,"field":"cvss","old":"4.3","new":null},{"seq":184807,"id":"CVE-2026-87543","ts":1789358376951,"field":"severity","old":"medium","new":"none"},{"seq":183057,"id":"CVE-2026-87543","ts":1789354323060,"field":"cvss","old":null,"new":"4.3"},{"seq":183056,"id":"CVE-2026-87543","ts":1789354323060,"field":"severity","old":"none","new":"medium"},{"seq":181850,"id":"CVE-2026-87543","ts":1789353334930,"field":"cvss","old":"4.3","new":null},{"seq":181849,"id":"CVE-2026-87543","ts":1789353334930,"field":"severity","old":"medium","new":"none"},{"seq":180643,"id":"CVE-2026-87543","ts":1789350290556,"field":"cvss","old":null,"new":"4.3"},{"seq":180642,"id":"CVE-2026-87543","ts":1789350290556,"field":"severity","old":"none","new":"medium"},{"seq":179436,"id":"CVE-2026-87543","ts":1789348308222,"field":"cvss","old":"4.3","new":null},{"seq":179435,"id":"CVE-2026-87543","ts":1789348308222,"field":"severity","old":"medium","new":"none"},{"seq":178229,"id":"CVE-2026-87543","ts":1789346377577,"field":"cvss","old":null,"new":"4.3"},{"seq":178228,"id":"CVE-2026-87543","ts":1789346377577,"field":"severity","old":"none","new":"medium"},{"seq":177022,"id":"CVE-2026-87543","ts":1789343188168,"field":"cvss","old":"4.3","new":null},{"seq":177021,"id":"CVE-2026-87543","ts":1789343188168,"field":"severity","old":"medium","new":"none"},{"seq":175139,"id":"CVE-2026-87543","ts":1789334884210,"field":"cvss","old":null,"new":"4.3"},{"seq":175138,"id":"CVE-2026-87543","ts":1789334884210,"field":"severity","old":"none","new":"medium"},{"seq":173934,"id":"CVE-2026-87543","ts":1789333703349,"field":"cvss","old":"4.3","new":null},{"seq":173933,"id":"CVE-2026-87543","ts":1789333703349,"field":"severity","old":"medium","new":"none"},{"seq":172748,"id":"CVE-2026-87543","ts":1789331096581,"field"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