{"id":"CVE-2026-87603","title":"Missing authorization in FileSystem in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions via a crafted HTML page","summary":"Missing authorization in FileSystem in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)","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-862"],"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":"2026-09-11T13:57:56.590","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87603","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/501627201","label":"chrome-cve-admin@google.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87603.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-87603"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-87603"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-10T18:38:42.753449Z"},"epss":0.00217,"epssPercentile":0.12385,"scores":{"nvd":6.5,"vendor":5.4,"adp":6.5},"ingestedAt":"2026-09-09T01:17:17.510Z","slug":"CVE-2026-87603","body":"## Overview\n\nMissing authorization in FileSystem in Google Chrome prior to 153.0.8010.36 allowed a remote attacker 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-2026-87603.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202517,"id":"CVE-2026-87603","ts":1789400085766,"field":"cvss","old":null,"new":"6.5"},{"seq":202516,"id":"CVE-2026-87603","ts":1789400085766,"field":"severity","old":"none","new":"medium"},{"seq":201244,"id":"CVE-2026-87603","ts":1789397620438,"field":"cvss","old":"6.5","new":null},{"seq":201243,"id":"CVE-2026-87603","ts":1789397620438,"field":"severity","old":"medium","new":"none"},{"seq":199937,"id":"CVE-2026-87603","ts":1789395578381,"field":"cvss","old":null,"new":"6.5"},{"seq":199936,"id":"CVE-2026-87603","ts":1789395578381,"field":"severity","old":"none","new":"medium"},{"seq":199178,"id":"CVE-2026-87603","ts":1789392260499,"field":"cvss","old":"6.5","new":null},{"seq":199177,"id":"CVE-2026-87603","ts":1789392260499,"field":"severity","old":"medium","new":"none"},{"seq":197511,"id":"CVE-2026-87603","ts":1789384297021,"field":"cvss","old":null,"new":"6.5"},{"seq":197510,"id":"CVE-2026-87603","ts":1789384297021,"field":"severity","old":"none","new":"medium"},{"seq":196785,"id":"CVE-2026-87603","ts":1789383776647,"field":"cvss","old":"6.5","new":null},{"seq":196784,"id":"CVE-2026-87603","ts":1789383776647,"field":"severity","old":"medium","new":"none"},{"seq":195689,"id":"CVE-2026-87603","ts":1789380578408,"field":"cvss","old":null,"new":"6.5"},{"seq":195688,"id":"CVE-2026-87603","ts":1789380578408,"field":"severity","old":"none","new":"medium"},{"seq":194640,"id":"CVE-2026-87603","ts":1789378789647,"field":"cvss","old":"6.5","new":null},{"seq":194639,"id":"CVE-2026-87603","ts":1789378789647,"field":"severity","old":"medium","new":"none"},{"seq":193427,"id":"CVE-2026-87603","ts":1789376521085,"field":"cvss","old":null,"new":"6.5"},{"seq":193426,"id":"CVE-2026-87603","ts":1789376521085,"field":"severity","old":"none","new":"medium"},{"seq":192214,"id":"CVE-2026-87603","ts":1789373639457,"field":"cvss","old":"6.5","new":null},{"seq":192213,"id":"CVE-2026-87603","ts":1789373639457,"field":"severity","old":"medium","new":"none"},{"seq":190999,"id":"CVE-2026-87603","ts":1789369488069,"field":"cvss","old":null,"new":"6.5"},{"seq":190998,"id":"CVE-2026-87603","ts":1789369488069,"field":"severity","old":"none","new":"medium"},{"seq":189786,"id":"CVE-2026-87603","ts":1789368461030,"field":"cvss","old":"6.5","new":null},{"seq":189785,"id":"CVE-2026-87603","ts":1789368461030,"field":"severity","old":"medium","new":"none"},{"seq":188569,"id":"CVE-2026-87603","ts":1789365236990,"field":"cvss","old":null,"new":"6.5"},{"seq":188568,"id":"CVE-2026-87603","ts":1789365236990,"field":"severity","old":"none","new":"medium"},{"seq":187356,"id":"CVE-2026-87603","ts":1789363480371,"field":"cvss","old":"6.5","new":null},{"seq":187355,"id":"CVE-2026-87603","ts":1789363480371,"field":"severity","old":"medium","new":"none"},{"seq":186142,"id":"CVE-2026-87603","ts":1789361235663,"field":"cvss","old":null,"new":"6.5"},{"seq":186141,"id":"CVE-2026-87603","ts":1789361235663,"field":"severity","old":"none","new":"medium"},{"seq":184929,"id":"CVE-2026-87603","ts":1789358378591,"field":"cvss","old":"6.5","new":null},{"seq":184928,"id":"CVE-2026-87603","ts":1789358378591,"field":"severity","old":"medium","new":"none"},{"seq":183178,"id":"CVE-2026-87603","ts":1789354323531,"field":"cvss","old":null,"new":"6.5"},{"seq":183177,"id":"CVE-2026-87603","ts":1789354323531,"field":"severity","old":"none","new":"medium"},{"seq":181971,"id":"CVE-2026-87603","ts":1789353335342,"field":"cvss","old":"6.5","new":null},{"seq":181970,"id":"CVE-2026-87603","ts":1789353335342,"field":"severity","old":"medium","new":"none"},{"seq":180764,"id":"CVE-2026-87603","ts":1789350290987,"field":"cvss","old":null,"new":"6.5"},{"seq":180763,"id":"CVE-2026-87603","ts":1789350290987,"field":"severity","old":"none","new":"medium"},{"seq":179557,"id":"CVE-2026-87603","ts":1789348308670,"field":"cvss","old":"6.5","new":null},{"seq":179556,"id":"CVE-2026-87603","ts":1789348308670,"field":"severity","old":"medium","new":"none"},{"seq":178350,"id":"CVE-2026-87603","ts":1789346377990,"field":"cvss","old":null,"new":"6.5"},{"seq":178349,"id":"CVE-2026-87603","ts":1789346377990,"field":"severity","old":"none","new":"medium"},{"seq":177143,"id":"CVE-2026-87603","ts":1789343188636,"field":"cvss","old":"6.5","new":null},{"seq":177142,"id":"CVE-2026-87603","ts":1789343188636,"field":"severity","old":"medium","new":"none"},{"seq":175260,"id":"CVE-2026-87603","ts":1789334884670,"field":"cvss","old":null,"new":"6.5"},{"seq":175259,"id":"CVE-2026-87603","ts":1789334884670,"field":"severity","old":"none","new":"medium"},{"seq":174055,"id":"CVE-2026-87603","ts":1789333703764,"field":"cvss","old":"6.5","new":null},{"seq":174054,"id":"CVE-2026-87603","ts":1789333703764,"field":"severity","old":"medium","new":"none"},{"seq":172869,"id":"CVE-2026-87603","ts":1789331096990,"field"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