CVE-2026-9919Network attack vector

Cross-origin data disclosure via WebGL out-of-bounds read

Published May 28, 2026 · Updated May 28, 2026

Out-of-bounds read in WebGL in Google Chrome for Android before 148.0.7778.216 allows remote attackers to leak cross-origin data via crafted HTML. The public record identifies WebGL as the locus but the Chromium issue remains access-restricted, so the exact faulty bounds operation is undisclosed. A user must load the attacker-controlled page; the disclosed impact is limited to reading data across origin boundaries, with no integrity or availability impact reported.

CVSS severity4.3
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in WebGL in Google Chrome for Android before 148.0.7778.216 allows remote attackers to leak cross-origin data via crafted HTML. The public record identifies WebGL as the locus but the Chromium issue remains access-restricted, so the exact faulty bounds operation is undisclosed. A user must load the attacker-controlled page; the disclosed impact is limited to reading data across origin boundaries, with no integrity or availability impact reported.

The record

CVE
CVE-2026-9919
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-125, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=148.0.7778.216 <148.0.7778.216

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=148.0.7778.216 <148.0.7778.216

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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