EUVD-2026-50607
GHSA-9j45-6833-228p
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 HTML page requiring victim navigation (UI:R); uninitialized read leaks only partial data (C:L) with no integrity or availability impact.
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Lifecycle Timeline
5DescriptionCVE.org
Uninitialized Use in WebNN in Google Chrome on Windows 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 leak in Google Chrome on Windows (prior to 151.0.7922.72) stems from uninitialized memory use in the WebNN subsystem, exposing fragments of memory that may contain data from other origins. A remote attacker can trigger this flaw by luring a victim to a crafted HTML page, requiring no authentication but necessitating user interaction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires active user interaction: the victim must navigate to an attacker-controlled or attacker-influenced HTML page in Chrome on Windows (UI:R in CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 4.3 (Medium) with vector AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N reflects a realistic assessment: the flaw is network-reachable with no complexity or privilege barrier on the attacker side, but requires user interaction and delivers only partial confidentiality impact with no integrity or availability consequences. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker serves a crafted web page that invokes the WebNN API in a way that causes Chrome to read from an uninitialized memory buffer. When a Windows user on a vulnerable Chrome version visits the page, the script extracts bytes from that buffer and exfiltrates them to an attacker-controlled endpoint, potentially revealing fragments of data belonging to another origin previously loaded in the browser. … |
| Remediation | Vendor-released patch: Chrome 151.0.7922.72. … Detailed patch versions, workarounds, and compensating controls in full report. |
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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
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