CVE-2026-106263
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Improper Input Validation in Google Chrome SignIn

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Chrome

Description
Improper input validation in SignIn in Google Chrome prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to bypass system access restrictions via a crafted Chrome extension. (Chromium security severity: Medium)

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-06
AI Q&A
2026-10-06
EPSS Evaluated
N/A
NVD
CVE-2026-106263
EUVD
EUVD-2026-93768

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Google Chrome 155.0.8059.39

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Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability involves improper input validation in the SignIn feature of Google Chrome before version 155.0.8059.39. A remote attacker could exploit this by using social engineering tactics to trick a user into installing a malicious Chrome extension, which could then bypass system access restrictions.

Impact Analysis

If exploited, this vulnerability could allow an attacker to bypass security restrictions on your system through a crafted Chrome extension. This might lead to unauthorized access to sensitive data or system functions, potentially compromising your privacy and security.

Mitigation Strategies

Update Google Chrome to version 155.0.8059.39 or later to address the improper input validation issue in SignIn.

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