{"id":"CVE-2026-87434","title":"Missing authorization in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page","summary":"Missing authorization in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)","severity":"low","cvss":3.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/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":"2026-09-09","sourceUpdated":"2026-09-09T20:30:01.037","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87434","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/493322521","label":"chrome-cve-admin@google.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87434.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-87434"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-87434"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00269,"epssPercentile":0.19304,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-09T17:09:49.153271Z"},"scores":{"nvd":3.1,"vendor":4.6,"adp":3.1},"ingestedAt":"2026-09-09T01:17:17.511Z","slug":"CVE-2026-87434","body":"## Overview\n\nMissing authorization in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass web origin policy 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-2026-87434.json)","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":202173,"id":"CVE-2026-87434","ts":1789400064929,"field":"cvss","old":null,"new":"3.1"},{"seq":202172,"id":"CVE-2026-87434","ts":1789400064929,"field":"severity","old":"none","new":"low"},{"seq":200900,"id":"CVE-2026-87434","ts":1789397618400,"field":"cvss","old":"3.1","new":null},{"seq":200899,"id":"CVE-2026-87434","ts":1789397618400,"field":"severity","old":"low","new":"none"},{"seq":199593,"id":"CVE-2026-87434","ts":1789395560372,"field":"cvss","old":null,"new":"3.1"},{"seq":199592,"id":"CVE-2026-87434","ts":1789395560372,"field":"severity","old":"none","new":"low"},{"seq":198838,"id":"CVE-2026-87434","ts":1789392248775,"field":"cvss","old":"3.1","new":null},{"seq":198837,"id":"CVE-2026-87434","ts":1789392248775,"field":"severity","old":"low","new":"none"},{"seq":197171,"id":"CVE-2026-87434","ts":1789384295926,"field":"cvss","old":null,"new":"3.1"},{"seq":197170,"id":"CVE-2026-87434","ts":1789384295926,"field":"severity","old":"none","new":"low"},{"seq":196445,"id":"CVE-2026-87434","ts":1789383757771,"field":"cvss","old":"3.1","new":null},{"seq":196444,"id":"CVE-2026-87434","ts":1789383757771,"field":"severity","old":"low","new":"none"},{"seq":195349,"id":"CVE-2026-87434","ts":1789380576729,"field":"cvss","old":null,"new":"3.1"},{"seq":195348,"id":"CVE-2026-87434","ts":1789380576729,"field":"severity","old":"none","new":"low"},{"seq":194300,"id":"CVE-2026-87434","ts":1789378785046,"field":"cvss","old":"3.1","new":null},{"seq":194299,"id":"CVE-2026-87434","ts":1789378785046,"field":"severity","old":"low","new":"none"},{"seq":193087,"id":"CVE-2026-87434","ts":1789376519843,"field":"cvss","old":null,"new":"3.1"},{"seq":193086,"id":"CVE-2026-87434","ts":1789376519843,"field":"severity","old":"none","new":"low"},{"seq":191874,"id":"CVE-2026-87434","ts":1789373633293,"field":"cvss","old":"3.1","new":null},{"seq":191873,"id":"CVE-2026-87434","ts":1789373633293,"field":"severity","old":"low","new":"none"},{"seq":190659,"id":"CVE-2026-87434","ts":1789369486374,"field":"cvss","old":null,"new":"3.1"},{"seq":190658,"id":"CVE-2026-87434","ts":1789369486374,"field":"severity","old":"none","new":"low"},{"seq":189446,"id":"CVE-2026-87434","ts":1789368449986,"field":"cvss","old":"3.1","new":null},{"seq":189445,"id":"CVE-2026-87434","ts":1789368449986,"field":"severity","old":"low","new":"none"},{"seq":188229,"id":"CVE-2026-87434","ts":1789365235821,"field":"cvss","old":null,"new":"3.1"},{"seq":188228,"id":"CVE-2026-87434","ts":1789365235821,"field":"severity","old":"none","new":"low"},{"seq":187016,"id":"CVE-2026-87434","ts":1789363473103,"field":"cvss","old":"3.1","new":null},{"seq":187015,"id":"CVE-2026-87434","ts":1789363473103,"field":"severity","old":"low","new":"none"},{"seq":185802,"id":"CVE-2026-87434","ts":1789361234455,"field":"cvss","old":null,"new":"3.1"},{"seq":185801,"id":"CVE-2026-87434","ts":1789361234455,"field":"severity","old":"none","new":"low"},{"seq":184589,"id":"CVE-2026-87434","ts":1789358366208,"field":"cvss","old":"3.1","new":null},{"seq":184588,"id":"CVE-2026-87434","ts":1789358366208,"field":"severity","old":"low","new":"none"},{"seq":182839,"id":"CVE-2026-87434","ts":1789354322190,"field":"cvss","old":null,"new":"3.1"},{"seq":182838,"id":"CVE-2026-87434","ts":1789354322190,"field":"severity","old":"none","new":"low"},{"seq":181632,"id":"CVE-2026-87434","ts":1789353324540,"field":"cvss","old":"3.1","new":null},{"seq":181631,"id":"CVE-2026-87434","ts":1789353324540,"field":"severity","old":"low","new":"none"},{"seq":180425,"id":"CVE-2026-87434","ts":1789350289784,"field":"cvss","old":null,"new":"3.1"},{"seq":180424,"id":"CVE-2026-87434","ts":1789350289784,"field":"severity","old":"none","new":"low"},{"seq":179218,"id":"CVE-2026-87434","ts":1789348295741,"field":"cvss","old":"3.1","new":null},{"seq":179217,"id":"CVE-2026-87434","ts":1789348295741,"field":"severity","old":"low","new":"none"},{"seq":178011,"id":"CVE-2026-87434","ts":1789346376837,"field":"cvss","old":null,"new":"3.1"},{"seq":178010,"id":"CVE-2026-87434","ts":1789346376837,"field":"severity","old":"none","new":"low"},{"seq":176804,"id":"CVE-2026-87434","ts":1789343186456,"field":"cvss","old":"3.1","new":null},{"seq":176803,"id":"CVE-2026-87434","ts":1789343186456,"field":"severity","old":"low","new":"none"},{"seq":174921,"id":"CVE-2026-87434","ts":1789334883347,"field":"cvss","old":null,"new":"3.1"},{"seq":174920,"id":"CVE-2026-87434","ts":1789334883347,"field":"severity","old":"none","new":"low"},{"seq":173716,"id":"CVE-2026-87434","ts":1789333702565,"field":"cvss","old":"3.1","new":null},{"seq":173715,"id":"CVE-2026-87434","ts":1789333702565,"field":"severity","old":"low","new":"none"},{"seq":172530,"id":"CVE-2026-87434","ts":1789331095811,"field":"cvss","old":null,"new":"3.1"},{"seq":172529,"id":"CVE-2026-87434","t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