CVE-2026-79260

Analyzed Analyzed - Analysis Complete

Improper Input Validation in Google Chrome Cookies

Publication date: 2026-08-25

Last updated on: 2026-08-31

Assigner: Chrome

Description

Improper input validation in Cookies in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-25

Last Modified

2026-08-31

Generated

2026-09-15

AI Q&A

2026-08-26

EPSS Evaluated

2026-09-13

NVD

CVE-2026-79260

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 cookies within Google Chrome versions before 152.0.7977.65. A remote attacker who had already compromised the renderer process could exploit this to bypass web origin policy by using a specially crafted HTML page.

Detection Guidance

This vulnerability involves improper input validation in Chrome's cookie handling. Detection requires checking Chrome version and monitoring for suspicious renderer process activity. Update Chrome to 152.0.7977.65 or later to patch the issue.

Impact Analysis

If you are using an affected version of Chrome, an attacker could potentially access or manipulate cookies from different websites, leading to unauthorized actions or data exposure on sites you visit.

Compliance Impact

This vulnerability involves improper input validation in cookies, potentially allowing a remote attacker to bypass web origin policy. While the impact on compliance is not explicitly detailed, such vulnerabilities could theoretically affect data integrity and access controls, which are critical under standards like GDPR and HIPAA. However, specific compliance implications are not provided in the given context.

Mitigation Strategies

Update Google Chrome to version 152.0.7977.65 or later to address the improper input validation in Cookies.

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