CVE-2026-106271
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Missing Authorization in Google Chrome PDF Workers

Vulnerability report for CVE-2026-106271, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Chrome

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)

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-06
AI Q&A
2026-10-06
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Google Chrome 155.0.8059.39

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

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Executive Summary

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.

Impact Analysis

An attacker could exploit this to access sensitive data or perform unauthorized actions by bypassing site isolation, potentially leading to data theft or further system compromise.

Mitigation Strategies

Update Google Chrome to version 155.0.8059.39 or later to address the missing authorization issue in Workers.

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