CVE-2026-17954

Analyzed Analyzed - Analysis Complete

Policy Bypass in MHTML via Crafted Page in Google Chrome

Publication date: 2026-07-30

Last updated on: 2026-08-03

Assigner: Chrome

Description

Policy bypass in MHTML in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted MHTML page. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-30

Last Modified

2026-08-03

Generated

2026-08-19

AI Q&A

2026-07-30

EPSS Evaluated

2026-08-18

NVD

CVE-2026-17954

EUVD

EUVD-2026-50880

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-346	The product does not properly verify that the source of data or communication is valid.

Attack-Flow Graph

Executive Summary

This vulnerability is a policy bypass in MHTML (MIME HTML) handling in Google Chrome versions before 151.0.7922.72. It allows a remote attacker to leak data across different origins by tricking a user into opening a specially crafted MHTML page.

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 or chrome://settings/help in the browser. If your version is below 151.0.7922.72, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive data from other websites you are logged into, potentially exposing personal information, login credentials, or other confidential data.

Compliance Impact

This vulnerability allows a remote attacker to leak cross-origin data via a crafted MHTML page, which could potentially expose sensitive information. This may impact compliance with GDPR (data protection) and HIPAA (health data privacy) by increasing the risk of unauthorized data disclosure.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.72 or later to address the policy bypass vulnerability in MHTML.

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