CVE-2026-7954Network attack vector

Cross-origin data disclosure via Shared Storage race

Published May 6, 2026 · Updated May 6, 2026

Race condition in Shared Storage in Google Chrome before 148.0.7778.96 allows remote attackers to leak cross-origin data. Google has not disclosed the competing Shared Storage operations or synchronization failure that exposes data across origins. Exploitation requires a crafted HTML page, user interaction, and prior compromise of Chrome's renderer process; the reported consequence is cross-origin data disclosure only.

CVSS severity3.1
Low
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Shared Storage in Google Chrome before 148.0.7778.96 allows remote attackers to leak cross-origin data. Google has not disclosed the competing Shared Storage operations or synchronization failure that exposes data across origins. Exploitation requires a crafted HTML page, user interaction, and prior compromise of Chrome's renderer process; the reported consequence is cross-origin data disclosure only.

The record

CVE
CVE-2026-7954
Published
May 6, 2026
Updated
May 6, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-362
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 6, 2026CVE publishedPublication date reported by the CVE source.
  2. May 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=148.0.7778.96 <148.0.7778.96

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=148.0.7778.96 <148.0.7778.96

Published CVSS scores

3.1CISA-ADPCVSS:3.1/AV:N/AC:H/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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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