CVE-2026-11273Network attack vector

Universal cross-site scripting via Omnibox input validation

Published Jun 4, 2026 · Updated Jun 4, 2026

Universal cross-site scripting in Google Chrome before 149.0.7827.53 allows remote attackers to inject script via a crafted page. The Omnibox accepts untrusted page-controlled input during specific UI gestures without sufficient validation, crossing normal origin boundaries. A user must visit attacker-controlled HTML and perform the required gestures; successful exploitation runs arbitrary script or HTML in another origin's context.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Universal cross-site scripting in Google Chrome before 149.0.7827.53 allows remote attackers to inject script via a crafted page. The Omnibox accepts untrusted page-controlled input during specific UI gestures without sufficient validation, crossing normal origin boundaries. A user must visit attacker-controlled HTML and perform the required gestures; successful exploitation runs arbitrary script or HTML in another origin's context.

The record

CVE
CVE-2026-11273
Published
Jun 4, 2026
Updated
Jun 4, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 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=149.0.7827.53 <149.0.7827.53

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=149.0.7827.53 <149.0.7827.53

Published CVSS scores

No CVSS assessment is available in this record.

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

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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