CVE-2026-17764

Analyzed Analyzed - Analysis Complete

FedCM Same Origin Policy Bypass in Google Chrome

Publication date: 2026-07-30

Last updated on: 2026-08-04

Assigner: Chrome

Description

Inappropriate implementation in FedCM in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-30

Last Modified

2026-08-04

Generated

2026-08-19

AI Q&A

2026-07-30

EPSS Evaluated

2026-08-18

NVD

CVE-2026-17764

EUVD

EUVD-2026-50713

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 151.0.7922.72 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-693	The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Attack-Flow Graph

Executive Summary

This vulnerability is an inappropriate implementation in FedCM (Federated Credential Management) in Google Chrome versions before 151.0.7922.72. It allows a remote attacker to bypass the same-origin policy through a crafted HTML page, potentially enabling unauthorized access to sensitive data or actions across different domains.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 151.0.7922.72. To detect it, check your Chrome version by running chrome://version/ in the browser. If your version is below 151.0.7922.72, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow attackers to bypass security restrictions, access user data across different websites, or perform actions on behalf of the user without proper authorization. This could lead to privacy breaches, account takeovers, or unauthorized data exposure.

Compliance Impact

The vulnerability allows bypassing same origin policy, which could lead to unauthorized data access or exposure. This may impact compliance with GDPR (data protection) and HIPAA (health data privacy) by increasing risks of data breaches or unauthorized access to sensitive information.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.72 or later to address the vulnerability.

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