Incorrect authorization in Network 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: High)

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

No data.

No data.

No data.

References
Link Providers
https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html cve-icon cve-icon cve-icon
https://issues.chromium.org/issues/553118043 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-87499 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-87499 cve-icon
History

Thu, 10 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'}

 ssvc

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

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'}

Wed, 09 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Title Chrome Network Authorization Flaw Enables Site Isolation Bypass chromium-browser: chromium-browser: Incorrect authorization in Network
Weaknesses CWE-653
References
Metrics threat_severity

None

 cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'}

threat_severity

Important

Wed, 09 Sep 2026 08:15:00 +0000

Type Values Removed Values Added
Title Chrome Network Authorization Flaw Enables Site Isolation Bypass

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

Type Values Removed Values Added
Description Incorrect authorization in Network 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: High)
Weaknesses CWE-863
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published: 2026-09-09T00:09:36.908Z

Updated: 2026-09-10T15:29:35.802Z

Reserved: 2026-09-08T22:38:50.878Z

Link: CVE-2026-87499

cve-icon Vulnrichment

Updated: 2026-09-10T15:29:31.336Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-09-09T01:17:06.797

Modified: 2026-09-10T16:18:05.073

Link: CVE-2026-87499

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-09T00:09:36Z

Links: CVE-2026-87499 - Bugzilla