CVE-2026-17878

Analyzed Analyzed - Analysis Complete

Inappropriate CSS Implementation in Google Chrome Leads to UXSS

Publication date: 2026-07-30

Last updated on: 2026-08-03

Assigner: Chrome

Description

Inappropriate implementation in CSS in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

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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-2026-17878

EUVD

EUVD-2026-50627

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a type of Cross-Site Scripting (XSS) known as Universal XSS (UXSS). It occurs due to an inappropriate implementation in Chrome's CSS handling before version 151.0.7922.72. A remote attacker could exploit this by crafting a malicious HTML page to inject arbitrary scripts or HTML into a user's browser session.

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 address bar. 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 user data, perform actions on behalf of the user, or take control of the user's browser session. This could lead to unauthorized access to accounts, data theft, or further malware infections.

Compliance Impact

This vulnerability allows a remote attacker to inject arbitrary scripts or HTML via a crafted page, which could lead to unauthorized data access or manipulation. Such cross-site scripting risks may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information if exploited.

Mitigation Strategies

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

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