CVE-2026-17917Network attack vector

Remote discretionary access-control bypass

Published Jul 30, 2026 · Updated Jul 30, 2026

Insufficient policy enforcement in Chrome for iOS before 151.0.7922.72 allows remote attackers to bypass discretionary access control. Google identifies the affected locus only as Chrome for iOS; the restricted issue record does not disclose the policy check or its incorrect handling of crafted HTML. Exploitation requires a user to open a crafted HTML page, and the published impact is limited to unauthorized policy-controlled actions without reported data disclosure or service interruption.

CVSS severity6.5
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

Insufficient policy enforcement in Chrome for iOS before 151.0.7922.72 allows remote attackers to bypass discretionary access control. Google identifies the affected locus only as Chrome for iOS; the restricted issue record does not disclose the policy check or its incorrect handling of crafted HTML. Exploitation requires a user to open a crafted HTML page, and the published impact is limited to unauthorized policy-controlled actions without reported data disclosure or service interruption.

The record

CVE
CVE-2026-17917
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-284, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 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=151.0.7922.72 <151.0.7922.72

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=151.0.7922.72 <151.0.7922.72

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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-284Improper Access Control
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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