{"id":"CVE-2026-87471","title":"Incorrect authorization in ServiceWorker 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":"Incorrect authorization in ServiceWorker 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: Medium)","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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":"2026-09-10","sourceUpdated":"2026-09-10T20:52:49.090","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87471","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/498869663","label":"chrome-cve-admin@google.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87471.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-87471"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-87471"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87471"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T18:43:31.949429Z"},"epss":0.00339,"epssPercentile":0.275,"scores":{"nvd":8.1,"vendor":8.7,"adp":8.1},"ingestedAt":"2026-09-09T01:17:17.510Z","slug":"CVE-2026-87471","body":"## Overview\n\nIncorrect authorization in ServiceWorker 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: 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-2026-87471.json)","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":202247,"id":"CVE-2026-87471","ts":1789400065216,"field":"cvss","old":null,"new":"8.1"},{"seq":202246,"id":"CVE-2026-87471","ts":1789400065216,"field":"severity","old":"none","new":"high"},{"seq":200974,"id":"CVE-2026-87471","ts":1789397618931,"field":"cvss","old":"8.1","new":null},{"seq":200973,"id":"CVE-2026-87471","ts":1789397618931,"field":"severity","old":"high","new":"none"},{"seq":199667,"id":"CVE-2026-87471","ts":1789395566188,"field":"cvss","old":null,"new":"8.1"},{"seq":199666,"id":"CVE-2026-87471","ts":1789395566188,"field":"severity","old":"none","new":"high"},{"seq":198910,"id":"CVE-2026-87471","ts":1789392254398,"field":"cvss","old":"8.1","new":null},{"seq":198909,"id":"CVE-2026-87471","ts":1789392254398,"field":"severity","old":"high","new":"none"},{"seq":197243,"id":"CVE-2026-87471","ts":1789384296160,"field":"cvss","old":null,"new":"8.1"},{"seq":197242,"id":"CVE-2026-87471","ts":1789384296160,"field":"severity","old":"none","new":"high"},{"seq":196517,"id":"CVE-2026-87471","ts":1789383759168,"field":"cvss","old":"8.1","new":null},{"seq":196516,"id":"CVE-2026-87471","ts":1789383759168,"field":"severity","old":"high","new":"none"},{"seq":195421,"id":"CVE-2026-87471","ts":1789380576991,"field":"cvss","old":null,"new":"8.1"},{"seq":195420,"id":"CVE-2026-87471","ts":1789380576991,"field":"severity","old":"none","new":"high"},{"seq":194372,"id":"CVE-2026-87471","ts":1789378785564,"field":"cvss","old":"8.1","new":null},{"seq":194371,"id":"CVE-2026-87471","ts":1789378785564,"field":"severity","old":"high","new":"none"},{"seq":193159,"id":"CVE-2026-87471","ts":1789376520110,"field":"cvss","old":null,"new":"8.1"},{"seq":193158,"id":"CVE-2026-87471","ts":1789376520110,"field":"severity","old":"none","new":"high"},{"seq":191946,"id":"CVE-2026-87471","ts":1789373633815,"field":"cvss","old":"8.1","new":null},{"seq":191945,"id":"CVE-2026-87471","ts":1789373633815,"field":"severity","old":"high","new":"none"},{"seq":190731,"id":"CVE-2026-87471","ts":1789369486905,"field":"cvss","old":null,"new":"8.1"},{"seq":190730,"id":"CVE-2026-87471","ts":1789369486905,"field":"severity","old":"none","new":"high"},{"seq":189518,"id":"CVE-2026-87471","ts":1789368455140,"field":"cvss","old":"8.1","new":null},{"seq":189517,"id":"CVE-2026-87471","ts":1789368455140,"field":"severity","old":"high","new":"none"},{"seq":188301,"id":"CVE-2026-87471","ts":1789365236081,"field":"cvss","old":null,"new":"8.1"},{"seq":188300,"id":"CVE-2026-87471","ts":1789365236081,"field":"severity","old":"none","new":"high"},{"seq":187088,"id":"CVE-2026-87471","ts":1789363474748,"field":"cvss","old":"8.1","new":null},{"seq":187087,"id":"CVE-2026-87471","ts":1789363474748,"field":"severity","old":"high","new":"none"},{"seq":185874,"id":"CVE-2026-87471","ts":1789361234704,"field":"cvss","old":null,"new":"8.1"},{"seq":185873,"id":"CVE-2026-87471","ts":1789361234704,"field":"severity","old":"none","new":"high"},{"seq":184661,"id":"CVE-2026-87471","ts":1789358371343,"field":"cvss","old":"8.1","new":null},{"seq":184660,"id":"CVE-2026-87471","ts":1789358371343,"field":"severity","old":"high","new":"none"},{"seq":182911,"id":"CVE-2026-87471","ts":1789354322484,"field":"cvss","old":null,"new":"8.1"},{"seq":182910,"id":"CVE-2026-87471","ts":1789354322484,"field":"severity","old":"none","new":"high"},{"seq":181704,"id":"CVE-2026-87471","ts":1789353329467,"field":"cvss","old":"8.1","new":null},{"seq":181703,"id":"CVE-2026-87471","ts":1789353329467,"field":"severity","old":"high","new":"none"},{"seq":180497,"id":"CVE-2026-87471","ts":1789350290032,"field":"cvss","old":null,"new":"8.1"},{"seq":180496,"id":"CVE-2026-87471","ts":1789350290032,"field":"severity","old":"none","new":"high"},{"seq":179290,"id":"CVE-2026-87471","ts":1789348301602,"field":"cvss","old":"8.1","new":null},{"seq":179289,"id":"CVE-2026-87471","ts":1789348301602,"field":"severity","old":"high","new":"none"},{"seq":178083,"id":"CVE-2026-87471","ts":1789346377088,"field":"cvss","old":null,"new":"8.1"},{"seq":178082,"id":"CVE-2026-87471","ts":1789346377088,"field":"severity","old":"none","new":"high"},{"seq":176876,"id":"CVE-2026-87471","ts":1789343186972,"field":"cvss","old":"8.1","new":null},{"seq":176875,"id":"CVE-2026-87471","ts":1789343186972,"field":"severity","old":"high","new":"none"},{"seq":174993,"id":"CVE-2026-87471","ts":1789334883638,"field":"cvss","old":null,"new":"8.1"},{"seq":174992,"id":"CVE-2026-87471","ts":1789334883638,"field":"severity","old":"none","new":"high"},{"seq":173788,"id":"CVE-2026-87471","ts":1789333702838,"field":"cvss","old":"8.1","new":null},{"seq":173787,"id":"CVE-2026-87471","ts":1789333702838,"field":"severity","old":"high","new":"none"},{"seq":172602,"id":"CVE-2026-87471","ts":1789331096063,"field":"cvss","old":null,"new":"8.1"},{"seq":17260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