CVE-2026-91716Network attack vectorHinoki check available

Sandbox escape via Auth use after free

Published Sep 15, 2026 · Updated Sep 15, 2026

Use after free in Auth in Google Chrome before 153.0.8010.47 allows remote attackers to execute arbitrary code outside the sandbox. The Auth component accesses memory after releasing it while processing a crafted HTML page; the affected function and lifetime error are undisclosed. A user must load attacker-controlled HTML, after which successful exploitation escapes Chrome's sandbox and runs code in the browser context.

CVSS severityUnavailable
Unscored
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use after free in Auth in Google Chrome before 153.0.8010.47 allows remote attackers to execute arbitrary code outside the sandbox. The Auth component accesses memory after releasing it while processing a crafted HTML page; the affected function and lifetime error are undisclosed. A user must load attacker-controlled HTML, after which successful exploitation escapes Chrome's sandbox and runs code in the browser context.

The record

CVE
CVE-2026-91716
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Google Cloud
Product
Google Chrome
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=153.0.8010.47 <153.0.8010.47

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=153.0.8010.47 <153.0.8010.47

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

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

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