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EPSS 0.2%top 85%

CVE-2026-9921: Uninitialized Use in Google Chrome

0
Medium
VulnerabilityCVE-2026-9921cvecve-2026-9921
Published: 05/28/2026 (05/28/2026, 22:25:24 UTC)
Source: CVE Database V5
Vendor/Project: Google
Product: Chrome

Description

Uninitialized Use in WebGL in Google Chrome on Android prior to 148.0.7778.216 allowed a remote attacker to leak cross-origin information via a crafted HTML page. (Chromium security severity: High)

CVSS v3.1

Score 4.3medium

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

Affected software

GitHub Actionsmore threats →ai
chromium/chromium
pkg:github/chromium/chromium
Affected versions
=148.0.7778.216

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 05/28/2026, 23:49:04 UTC

Technical Analysis

This vulnerability involves uninitialized memory use within the WebGL implementation of Google Chrome on Android versions before 148.0.7778.216. Exploitation can lead to information disclosure across origins, violating browser security boundaries. The issue was publicly disclosed on May 28, 2026. While the Chromium security team rates this as high severity, no CVSS score or explicit remediation status is included in the provided data. The vendor advisory URL is given but does not contain patch details in the input.

Potential Impact

Successful exploitation could allow a remote attacker to leak sensitive cross-origin information from a user's browser session on affected Chrome versions for Android. This compromises the confidentiality of data that should be isolated by the browser's same-origin policy. There are no reports of active exploitation in the wild.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html for current remediation guidance. Users should update to Chrome version 148.0.7778.216 or later once confirmed. Until then, no specific mitigation steps are provided in the available data.

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Technical Details

Data Version
5.2
Assigner Short Name
Chrome
Date Reserved
2026-05-28T17:24:51.636Z
Cvss Version
null
State
PUBLISHED
Remediation Level
null
Vendor Advisory Urls
[{"url":"https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html","vendor":"Google"}]

Threat ID: 6a18c667e29bf47b503b5261

Added to database: 05/28/2026, 22:49:11 UTC

Last enriched: 05/28/2026, 23:49:04 UTC

Last updated: 07/31/2026, 19:23:00 UTC

Views: 41

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