{"id":"CVE-2026-93378","title":"Missing authorization in Storage in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file","summary":"Missing authorization in Storage in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (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 < 153.0.8010.52"],"patched":["chrome 153.0.8010.52"],"published":"2026-09-17","updated":"2026-09-21","sourceUpdated":"2026-09-21T12:46:52.520","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93378","references":[{"url":"https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0194356994.html","label":"chrome-cve-admin@google.com"},{"url":"https://issues.chromium.org/issues/540051167","label":"chrome-cve-admin@google.com"}],"tags":["nvd","cve.org"],"epss":0.00211,"epssPercentile":0.11717,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T13:10:55.428992Z"},"ingestedAt":"2026-09-17T21:29:16.988Z","slug":"CVE-2026-93378","body":"## Overview\n\nMissing authorization in Storage in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)\n\n## Affected\n\n- `chrome < 153.0.8010.52`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `chrome 153.0.8010.52`","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":206799,"id":"CVE-2026-93378","ts":1789738963002,"field":"cvss","old":null,"new":"3.1"},{"seq":206798,"id":"CVE-2026-93378","ts":1789738963002,"field":"severity","old":"none","new":"low"}]}