Improper Input Validation in Google Chrome DevTools

Publication date: 2026-08-25

Last updated on: 2026-08-25

Assigner: Chrome

Description

Improper input validation in DevTools in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-25

Last Modified

2026-08-25

Generated

2026-08-26

AI Q&A

2026-08-26

EPSS Evaluated

N/A

NVD

CVE-2026-79203

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 152.0.7977.65 (exc)

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 improper input validation in Google Chrome's DevTools. A remote attacker who already compromised the renderer process could exploit it to bypass site isolation by using a specially crafted HTML page.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access data across different sites, potentially stealing sensitive information like cookies, passwords, or personal data from other open tabs.

Mitigation Strategies

Update Google Chrome to version 152.0.7977.65 or later to address the improper input validation in DevTools that could allow bypass of site isolation.

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