CVE-2026-15128Network attack vector

Cross-origin script execution via form-change reentrancy

Published Jul 8, 2026 · Updated Jul 8, 2026

Cross-site scripting in Forms in Google Chrome before 150.0.7871.115 allows remote attackers to execute scripts across origins via crafted HTML. Blink's HTMLFieldSetElement::ChildrenChanged path fires a form-control change event while disabledness-changing DOM mutations are still running, permitting attacker-controlled script reentrancy. A user must open the crafted page and interact with its form control; successful exploitation runs attacker-supplied script or HTML across an origin boundary.

CVSS severity6.1
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

Cross-site scripting in Forms in Google Chrome before 150.0.7871.115 allows remote attackers to execute scripts across origins via crafted HTML. Blink's HTMLFieldSetElement::ChildrenChanged path fires a form-control change event while disabledness-changing DOM mutations are still running, permitting attacker-controlled script reentrancy. A user must open the crafted page and interact with its form control; successful exploitation runs attacker-supplied script or HTML across an origin boundary.

The record

CVE
CVE-2026-15128
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 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=150.0.7871.115 <150.0.7871.115

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=150.0.7871.115 <150.0.7871.115

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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