CVE-2026-19153

chromium-browser: Google Chrome: Site isolation bypass via insufficient input validation in Workers

Published Aug 6, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
Insufficient validation of untrusted input in Workers in Google Chrome prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4728-1 chromium security update
Debian DSA Debian DSA DSA-6422-1 chromium security update
History
Type Values Removed Values Added
Title chromium-browser: Google Chrome: Site isolation bypass via insufficient input validation in Workers
Weaknesses CWE-807
References
Metrics threat_severity

None

threat_severity

Important

Type Values Removed Values Added
Title Chrome Workers Input Validation Weakness Enables Site Isolation Bypass
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': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Chrome Workers Input Validation Weakness Enables Site Isolation Bypass
Type Values Removed Values Added
Description Insufficient validation of untrusted input in Workers in Google Chrome prior to 151.0.7922.109 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-20
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Aug 7, 2026, 5:07 PM
Reserved
Aug 6, 2026, 4:51 PM
Status
Analyzed
Published
Aug 6, 2026, 10:16 PM
Modified
Oct 23, 2026, 9:10 PM
Severity
Important
Public date
Aug 6, 2026, 8:33 PM