CVE-2026-106271

chromium-browser: Missing authorization in Workers

Published Oct 6, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
Missing authorization in Workers in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4833-1 chromium security update
Debian DSA Debian DSA DSA-6553-1 chromium security update
History
Type Values Removed Values Added
Title chromium-browser: Missing authorization in Workers
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Missing authorization allows site isolation bypass in Chrome via crafted PDF
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 Missing authorization allows site isolation bypass in Chrome via crafted PDF
Type Values Removed Values Added
Description Missing authorization in Workers in Google Chrome prior to 155.0.8059.39 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-862
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Oct 7, 2026, 7:56 PM
Reserved
Oct 6, 2026, 4:34 PM
Status
Analyzed
Published
Oct 6, 2026, 7:17 PM
Modified
Oct 8, 2026, 6:03 PM
Severity
Moderate
Public date
Oct 6, 2026, 6:41 PM