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Mozilla Firefox EUVDEUVD-2026-30917

| CVE-2026-8967 HIGH
Information Exposure (CWE-200)
2026-05-19 mozilla GHSA-pqxm-w6gr-wmxh
Information Disclosure Mozilla Suse Red Hat
High
Disputed · 7.5 NVD
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Severity by source

Sources disagree (Low–High)
NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SUSE
HIGH
qualitative
Red Hat
3.4 LOW
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

3
Analysis Generated
May 20, 2026 - 17:26 vuln.today
CVSS changed
May 20, 2026 - 17:22 NVD
7.5 (HIGH)
CVE Published
May 19, 2026 - 12:30 nvd
UNKNOWN (no severity yet)

DescriptionCVE.org

Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 151.

AnalysisAI

Information disclosure in Mozilla Firefox's WebGPU graphics component allows remote attackers to access sensitive in-memory data from browser sessions via crafted web content rendered through the WebGPU API. The flaw affects Firefox versions prior to 151 and has been addressed by Mozilla in advisories MFSA2026-46 and MFSA2026-50. There is no public exploit identified at time of analysis, and EPSS scoring (0.02%, 4th percentile) indicates very low likelihood of near-term mass exploitation.

Technical ContextAI

WebGPU is a modern web graphics API that exposes low-level GPU compute and rendering capabilities to JavaScript, succeeding WebGL by providing more direct access to graphics hardware through abstractions over Vulkan, Metal, and Direct3D 12. The CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) classification indicates that the WebGPU implementation in Gecko leaks memory contents - typically uninitialized GPU buffers, texture data, or adjacent process memory - back into JavaScript-accessible structures. Per the CPE (cpe:2.3:a:mozilla:firefox:*), the issue resides specifically in the Firefox browser's WebGPU subsystem rather than in upstream wgpu library bindings used by other consumers.

RemediationAI

Vendor-released patch: Firefox 151 - upgrade all endpoints to this version or later via Mozilla's update channel or your endpoint management system, referencing https://www.mozilla.org/security/advisories/mfsa2026-46/ and https://www.mozilla.org/security/advisories/mfsa2026-50/ for full advisory detail. As a temporary compensating control until patching completes, administrators can disable WebGPU by setting dom.webgpu.enabled to false in about:config or via enterprise policy, which eliminates the affected attack surface at the cost of breaking sites that legitimately rely on WebGPU rendering and compute (3D viewers, in-browser ML inference, modern games). Browser-isolation gateways and DNS/proxy filtering of high-risk untrusted browsing categories provide partial defense-in-depth but do not address the root issue.

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Same weakness CWE-200 – Information Exposure

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Same technique Information Disclosure

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7.5
CVE-2014-6324 HIGH POC
8.8
CVE-2023-7028 CRITICAL POC
10.0
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7.3

Vendor StatusVendor

SUSE

Severity: High
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7 Fixed

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EUVD-2026-30917 vulnerability details – vuln.today
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