CVE-2026-106331

Analyzed Analyzed - Analysis Complete

BaseFortify

Publication date: 2026-10-06

Last updated on: 2026-10-13

Assigner: Chrome

Description

Improper input validation in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to bypass web origin policy into a privileged page via a crafted Chrome extension. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-06

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-07

EPSS Evaluated

2026-10-18

NVD

CVE-2026-106331

EUVD

EUVD-2026-93629

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 155.0.8059.39 (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 Extensions feature. A remote attacker could exploit it through social engineering to bypass web origin policy and gain access to a privileged page by using a specially crafted Chrome extension.

Detection Guidance

This vulnerability involves improper input validation in Google Chrome extensions. Detection requires checking installed extensions for untrusted or modified ones. Review Chrome's extension list via chrome://extensions and look for suspicious entries. No specific commands are provided in the CVE details.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive pages or data within Chrome that should be restricted. This might lead to unauthorized actions, data theft, or further compromise of the user's system or account.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it involves improper input validation in Chrome Extensions leading to bypass of web origin policy. No evidence suggests it impacts data protection or privacy requirements under these regulations.

Mitigation Strategies

Update Google Chrome to version 155.0.8059.39 or later to address the vulnerability.

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