{"id":"CVE-2026-87508","title":"Incorrect authorization in Loader in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy via a crafted HTML page","summary":"Incorrect authorization in Loader in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/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":"2026-09-09","sourceUpdated":"2026-09-09T19:16:14.450","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87508","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/513346220","label":"chrome-cve-admin@google.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87508.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-87508"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-87508"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-09T17:25:11.260376Z"},"epss":0.00247,"epssPercentile":0.1624,"scores":{"nvd":4.3,"vendor":8.1,"adp":4.3},"ingestedAt":"2026-09-09T01:17:17.509Z","slug":"CVE-2026-87508","body":"## Overview\n\nIncorrect authorization in Loader in Google Chrome prior to 153.0.8010.36 allowed a remote attacker 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-2026-87508.json)","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202326,"id":"CVE-2026-87508","ts":1789400065503,"field":"cvss","old":null,"new":"4.3"},{"seq":202325,"id":"CVE-2026-87508","ts":1789400065503,"field":"severity","old":"none","new":"medium"},{"seq":201053,"id":"CVE-2026-87508","ts":1789397619700,"field":"cvss","old":"4.3","new":null},{"seq":201052,"id":"CVE-2026-87508","ts":1789397619700,"field":"severity","old":"medium","new":"none"},{"seq":199746,"id":"CVE-2026-87508","ts":1789395571982,"field":"cvss","old":null,"new":"4.3"},{"seq":199745,"id":"CVE-2026-87508","ts":1789395571982,"field":"severity","old":"none","new":"medium"},{"seq":198987,"id":"CVE-2026-87508","ts":1789392259839,"field":"cvss","old":"4.3","new":null},{"seq":198986,"id":"CVE-2026-87508","ts":1789392259839,"field":"severity","old":"medium","new":"none"},{"seq":197320,"id":"CVE-2026-87508","ts":1789384296393,"field":"cvss","old":null,"new":"4.3"},{"seq":197319,"id":"CVE-2026-87508","ts":1789384296393,"field":"severity","old":"none","new":"medium"},{"seq":196594,"id":"CVE-2026-87508","ts":1789383764025,"field":"cvss","old":"4.3","new":null},{"seq":196593,"id":"CVE-2026-87508","ts":1789383764025,"field":"severity","old":"medium","new":"none"},{"seq":195498,"id":"CVE-2026-87508","ts":1789380577250,"field":"cvss","old":null,"new":"4.3"},{"seq":195497,"id":"CVE-2026-87508","ts":1789380577250,"field":"severity","old":"none","new":"medium"},{"seq":194449,"id":"CVE-2026-87508","ts":1789378788966,"field":"cvss","old":"4.3","new":null},{"seq":194448,"id":"CVE-2026-87508","ts":1789378788966,"field":"severity","old":"medium","new":"none"},{"seq":193236,"id":"CVE-2026-87508","ts":1789376520382,"field":"cvss","old":null,"new":"4.3"},{"seq":193235,"id":"CVE-2026-87508","ts":1789376520382,"field":"severity","old":"none","new":"medium"},{"seq":192023,"id":"CVE-2026-87508","ts":1789373638748,"field":"cvss","old":"4.3","new":null},{"seq":192022,"id":"CVE-2026-87508","ts":1789373638748,"field":"severity","old":"medium","new":"none"},{"seq":190808,"id":"CVE-2026-87508","ts":1789369487217,"field":"cvss","old":null,"new":"4.3"},{"seq":190807,"id":"CVE-2026-87508","ts":1789369487217,"field":"severity","old":"none","new":"medium"},{"seq":189595,"id":"CVE-2026-87508","ts":1789368460321,"field":"cvss","old":"4.3","new":null},{"seq":189594,"id":"CVE-2026-87508","ts":1789368460321,"field":"severity","old":"medium","new":"none"},{"seq":188378,"id":"CVE-2026-87508","ts":1789365236329,"field":"cvss","old":null,"new":"4.3"},{"seq":188377,"id":"CVE-2026-87508","ts":1789365236329,"field":"severity","old":"none","new":"medium"},{"seq":187165,"id":"CVE-2026-87508","ts":1789363479707,"field":"cvss","old":"4.3","new":null},{"seq":187164,"id":"CVE-2026-87508","ts":1789363479707,"field":"severity","old":"medium","new":"none"},{"seq":185951,"id":"CVE-2026-87508","ts":1789361234957,"field":"cvss","old":null,"new":"4.3"},{"seq":185950,"id":"CVE-2026-87508","ts":1789361234957,"field":"severity","old":"none","new":"medium"},{"seq":184738,"id":"CVE-2026-87508","ts":1789358376669,"field":"cvss","old":"4.3","new":null},{"seq":184737,"id":"CVE-2026-87508","ts":1789358376669,"field":"severity","old":"medium","new":"none"},{"seq":182987,"id":"CVE-2026-87508","ts":1789354322776,"field":"cvss","old":null,"new":"4.3"},{"seq":182986,"id":"CVE-2026-87508","ts":1789354322776,"field":"severity","old":"none","new":"medium"},{"seq":181780,"id":"CVE-2026-87508","ts":1789353334679,"field":"cvss","old":"4.3","new":null},{"seq":181779,"id":"CVE-2026-87508","ts":1789353334679,"field":"severity","old":"medium","new":"none"},{"seq":180573,"id":"CVE-2026-87508","ts":1789350290299,"field":"cvss","old":null,"new":"4.3"},{"seq":180572,"id":"CVE-2026-87508","ts":1789350290299,"field":"severity","old":"none","new":"medium"},{"seq":179366,"id":"CVE-2026-87508","ts":1789348307980,"field":"cvss","old":"4.3","new":null},{"seq":179365,"id":"CVE-2026-87508","ts":1789348307980,"field":"severity","old":"medium","new":"none"},{"seq":178159,"id":"CVE-2026-87508","ts":1789346377336,"field":"cvss","old":null,"new":"4.3"},{"seq":178158,"id":"CVE-2026-87508","ts":1789346377336,"field":"severity","old":"none","new":"medium"},{"seq":176952,"id":"CVE-2026-87508","ts":1789343187485,"field":"cvss","old":"4.3","new":null},{"seq":176951,"id":"CVE-2026-87508","ts":1789343187485,"field":"severity","old":"medium","new":"none"},{"seq":175069,"id":"CVE-2026-87508","ts":1789334883926,"field":"cvss","old":null,"new":"4.3"},{"seq":175068,"id":"CVE-2026-87508","ts":1789334883926,"field":"severity","old":"none","new":"medium"},{"seq":173864,"id":"CVE-2026-87508","ts":1789333703092,"field":"cvss","old":"4.3","new":null},{"seq":173863,"id":"CVE-2026-87508","ts":1789333703092,"field":"severity","old":"medium","new":"none"},{"seq":172678,"id":"CVE-2026-87508","ts":1789331096320,"field"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