CVE-2026-12303
Analyzed Analyzed - Analysis Complete

Graphics: WebGPU Information Disclosure in Firefox

Publication date: 2026-06-16

Last updated on: 2026-06-16

Assigner: Mozilla Corporation

Description
Information disclosure due to incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-06-16
Last Modified
2026-06-16
Generated
2026-07-06
AI Q&A
2026-06-16
EPSS Evaluated
2026-07-05
NVD
CVE-2026-12303
EUVD
EUVD-2026-37094

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 152.0 (exc)
mozilla thunderbird to 152.0.0 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is an information disclosure issue caused by incorrect boundary conditions in the Graphics: WebGPU component of Firefox. Essentially, it means that due to improper handling of certain limits or boundaries in the WebGPU graphics processing, sensitive information could be exposed unintentionally.

The issue was addressed and fixed in Firefox version 152.

Impact Analysis

This vulnerability can lead to unintended disclosure of information through the WebGPU graphics component. An attacker might exploit the incorrect boundary conditions to access data that should be protected, potentially compromising user privacy or security.

Mitigation Strategies

The vulnerability was fixed in Firefox version 152. To mitigate this vulnerability, you should update your Firefox browser to version 152 or later.

Compliance Impact

This vulnerability involves information disclosure due to incorrect boundary conditions in the Graphics: WebGPU component.

Information disclosure vulnerabilities can potentially impact compliance with data protection regulations such as GDPR and HIPAA, which require safeguarding personal and sensitive information.

However, there is no specific information provided about the nature or scope of the disclosed information or its impact on compliance with these standards.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-12303. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart