CVE-2026-74968
Undergoing Analysis Undergoing Analysis - In Progress

Graphics WebRender Site Isolation Flaw Fixed in Firefox 154

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Mozilla Corporation

Description
Site isolation issue in the Graphics: WebRender component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-74968
EUVD
EUVD-2026-60687

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox to 154 (inc)
mozilla firefox_esr to 153.1 (inc)
mozilla firefox 154
mozilla firefox_esr 153.1

Helpful Resources

Exploitability

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

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Executive Summary

This is a site isolation issue in Firefox's Graphics: WebRender component. It allows malicious websites to access data from other sites due to improper separation of content. Firefox 154 and Firefox ESR 153.1 fixed this problem.

Impact Analysis

An attacker could exploit this to steal sensitive information like login credentials or personal data from other websites you visit while using Firefox. This could lead to identity theft or unauthorized account access.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles and HIPAA's patient privacy requirements. Organizations using affected Firefox versions may face compliance violations and penalties.

Mitigation Strategies

Update Firefox to version 154 or later and Firefox ESR to version 153.1 or later to address the Site isolation issue in Graphics: WebRender.

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