CVE-2026-5733: Incorrect boundary conditions in the Graphics: WebGPU component
Published Apr 7, 2026
·Updated
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability affects Firefox < 149.0.2.
Other sources
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2.
— MITRE
Affected Software
3 affected componentsFixes available
Mozilla Firefox<149.0.2
149.0.2
Mozilla Thunderbird<149.0.2
149.0.2
Mozilla Firefox<149.0.2
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 149.0.2 - Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 149.0.2 - Upgrade
Upgrade
Thunderbirdto a version that resolves this vulnerability.Fixed in 149.0.2
Event History
Apr 7, 2026
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Updated
via Mozilla·12:00 AM
Affected Software
CVE Published
via MITRE·12:43 PM
Data Sourced
via MITRE·12:43 PM
Description
Data Sourced
via Red Hat·01:01 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·01:16 PM
DescriptionSeverityWeaknessAffected Software
Peer vulnerabilities
Found alongside the following vulnerabilities.