Severity by source
Sources disagree (Medium–Critical)AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Network-delivered via crafted page (AV:N), no auth needed (PR:N), active user visit required (UI:R), limited data leak with no integrity or availability impact (C:L/I:N/A:N).
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 VectorVendor: Chrome
Lifecycle Timeline
5DescriptionCVE.org
Uninitialized Use in Dawn in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Cross-origin data leakage in Google Chrome's Dawn WebGPU component (versions prior to 151.0.7922.72) enables remote attackers to read cross-origin data via a crafted HTML page that triggers uninitialized memory use (CWE-457). Exploitation requires the victim to visit an attacker-controlled page but demands no authentication and operates against default Chrome configurations. No public exploit has been identified at time of analysis and the EPSS score of 0.23% (14th percentile) reflects a currently low exploitation likelihood, consistent with Chromium's own Medium severity rating.
Technical ContextAI
Dawn is Chromium's cross-platform WebGPU graphics abstraction layer, responsible for translating WebGPU API calls into native GPU commands (via Metal, Vulkan, or D3D12). CWE-457 (Use of Uninitialized Variable) arises when allocated memory buffers are consumed before being zeroed or explicitly set, potentially exposing residual heap or stack contents from earlier allocations. In this context, a crafted HTML page can cause Dawn to process a WebGPU operation that reads uninitialized memory whose contents originate from a different browser origin, violating the Same-Origin Policy and constituting an information disclosure channel. The affected scope per CPE is cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*, covering all Chrome builds prior to 151.0.7922.72 across platforms.
RemediationAI
Update Google Chrome to version 151.0.7922.72 or later; this is the vendor-released patch confirmed by the Chrome stable channel advisory at https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html. Chrome's auto-update mechanism handles this for consumer installations; enterprise administrators should validate deployment status via chrome://settings/help or their endpoint management tooling. If immediate patching is blocked, restricting end-user access to untrusted or unknown web origins via network proxy policy or browser extension controls reduces exposure to the crafted-page delivery vector, though this is not a full mitigation and carries usability trade-offs. Disabling WebGPU entirely via enterprise policy (--disable-webgpu flag or corresponding GPUEnabled policy) would eliminate the Dawn attack surface but also breaks WebGPU-dependent web applications.
Same weakness CWE-457 – Use of Uninitialized Variable
View allSame technique Information Disclosure
View allVendor StatusVendor
SUSE
Severity: Critical| Product | Status |
|---|---|
| SUSE Package Hub 15 SP7 | Fixed |
| openSUSE Leap 16.0 | Fixed |
| SUSE Package Hub 15 SP7 | Affected |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-50759
GHSA-7hvm-x3c6-5694