CVE-2026-17710Network attack vector

Sandbox escape via flawed MHTML implementation

Published Jul 30, 2026 · Updated Jul 30, 2026

Protection mechanism failure in Google Chrome on Mac before 151.0.7922.72 allows remote attackers to escape the browser sandbox. The public record identifies MHTML as the locus but does not disclose which operation mishandles the crafted page or how the boundary check fails. Exploitation requires user interaction with crafted HTML and prior compromise of the renderer process, after which the attacker can cross the sandbox boundary.

CVSS severityUnavailable
Unscored
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Protection mechanism failure in Google Chrome on Mac before 151.0.7922.72 allows remote attackers to escape the browser sandbox. The public record identifies MHTML as the locus but does not disclose which operation mishandles the crafted page or how the boundary check fails. Exploitation requires user interaction with crafted HTML and prior compromise of the renderer process, after which the attacker can cross the sandbox boundary.

The record

CVE
CVE-2026-17710
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-693, T1203
Attack vector
network
Privileges
Unavailable

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 privilegesUnavailable in this record.

What is affected?

Go standard library · Google Chromeversion=151.0.7922.72 <151.0.7922.72

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
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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