Improper Input Validation in Google Chrome Cookies

Publication date: 2026-08-25

Last updated on: 2026-08-25

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:
Percentile:

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-2026-79260

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.

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.

Mitigation Strategies

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

Hi! I’m here to help you understand CVE-2026-79260. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70