Chrome Workers Input Validation Bypass

Publication date: 2026-08-06

Last updated on: 2026-08-06

Assigner: Chrome

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)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-06

Last Modified

2026-08-06

Generated

2026-08-07

AI Q&A

2026-08-07

EPSS Evaluated

N/A

NVD

CVE-2026-19153

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	151.0.7922.109

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This vulnerability involves insufficient validation of untrusted input in Google Chrome's Workers feature. A remote attacker who compromised the renderer process could exploit it to bypass site isolation by using a crafted HTML page.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access data from different sites, potentially stealing sensitive information like passwords or personal details. It undermines browser security protections.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.109 or later to address the vulnerability.

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