Description
Incorrect authorization in FileSystem 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 PDF file. (Chromium security severity: Medium)
Published: 2026-09-09
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 10 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 09 Sep 2026 06:00:00 +0000

Type Values Removed Values Added
Title Bypass of Site Isolation via PDF in Chrome Through FileSystem Authorization Flaw

Wed, 09 Sep 2026 01:00:00 +0000

Type Values Removed Values Added
Description Incorrect authorization in FileSystem 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 PDF file. (Chromium security severity: Medium)
Weaknesses CWE-863
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-09-10T14:10:23.903Z

Reserved: 2026-09-08T22:39:03.061Z

Link: CVE-2026-87505

cve-icon Vulnrichment

Updated: 2026-09-10T14:09:16.742Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-09-09T01:17:07.473

Modified: 2026-09-10T15:17:52.473

Link: CVE-2026-87505

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-09T05:45:05Z

Weaknesses