CVE-2026-121135

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Chrome 157.0.8103.38 Origin Policy Bypass

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Chrome

Description

Security issue in Platform in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

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Meta Information

Published

2026-11-03

Last Modified

2026-11-03

Generated

2026-11-04

AI Q&A

2026-11-04

EPSS Evaluated

N/A

NVD

CVE-2026-121135

EUVD

EUVD-2026-116315

Affected Vendors & Products

Vendor	Product	Version / Range
Google	Chrome	157.0.8103.38

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-436	Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

Attack-Flow Graph

Executive Summary

This vulnerability is a security issue in Google Chrome before version 157.0.8103.38. It allows a remote attacker to bypass the web origin policy by tricking a user into visiting a specially crafted HTML page. This means the attacker could access data or perform actions on behalf of the user without proper authorization.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive information, such as cookies or session tokens, from other websites you are logged into. It could also enable actions like modifying settings or posting content without your consent.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and privacy. Organizations using affected Chrome versions may face compliance risks, potential data breaches, and legal consequences.

Mitigation Strategies

Update Google Chrome to version 157.0.8103.38 or later to address the vulnerability.

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