Improper Input Validation in Google Chrome

Publication date: 2026-08-25

Last updated on: 2026-08-25

Assigner: Chrome

Description

Improper input validation in Editing in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass web origin policy 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-2026-78943

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 is an improper input validation issue in Google Chrome before version 152.0.7977.65. It allows a remote attacker who has already compromised the renderer process to bypass web origin policy through a crafted HTML page. The attacker would need to use social engineering to trick a user into interacting with the page.

Impact Analysis

If exploited, this vulnerability could allow an attacker to bypass security restrictions and access or modify data from different websites than intended. This could lead to theft of sensitive information, unauthorized actions on behalf of the user, or further compromise of the user's system.

Mitigation Strategies

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

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