CVE-2026-87465Network attack vector

UI spoofing via incorrect Downloads authorization

Published Sep 9, 2026 · Updated Sep 9, 2026

Incorrect authorization in Google Chrome Downloads before 153.0.8010.36 allows remote attackers to spoof UI via crafted HTML. The Downloads component incorrectly permits a compromised renderer to control browser UI presentation for content initiated by an attacker-controlled page. The gate is prior renderer compromise plus processing attacker-controlled HTML, and the reported consequence is limited to misleading browser UI.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Incorrect authorization in Google Chrome Downloads before 153.0.8010.36 allows remote attackers to spoof UI via crafted HTML. The Downloads component incorrectly permits a compromised renderer to control browser UI presentation for content initiated by an attacker-controlled page. The gate is prior renderer compromise plus processing attacker-controlled HTML, and the reported consequence is limited to misleading browser UI.

The record

CVE
CVE-2026-87465
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-863, T1036
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=153.0.8010.36 <153.0.8010.36

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Google Cloud · Google Chromeversion=153.0.8010.36 <153.0.8010.36

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1036Masquerading

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo