CVE-2026-3910Known exploitationNetwork attack vector

Sandboxed code execution via crafted HTML

Published Mar 12, 2026 · Updated Mar 12, 2026

Code execution in V8 in Google Chrome before 146.0.7680.75 allows remote attackers to run arbitrary code inside the sandbox via crafted HTML. Google describes the defect only as an inappropriate implementation in V8; the underlying operation on attacker-controlled input remains restricted. Opening a crafted page is required, and execution remains inside Chrome's sandbox unless combined with a separate escape.

CVSS severity8.8
High
EPSS probability2.00%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in V8 in Google Chrome before 146.0.7680.75 allows remote attackers to run arbitrary code inside the sandbox via crafted HTML. Google describes the defect only as an inappropriate implementation in V8; the underlying operation on attacker-controlled input remains restricted. Opening a crafted page is required, and execution remains inside Chrome's sandbox unless combined with a separate escape.

The record

CVE
CVE-2026-3910
Published
Mar 12, 2026
Updated
Mar 12, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-94, CWE-119, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 2026Record updatedLatest update available in the CVE record.
  3. Mar 13, 2026Exploitation reportedCISA Known Exploited Vulnerabilities Catalog entry

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=146.0.7680.75 <146.0.7680.75

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=146.0.7680.75 <146.0.7680.75

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
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.

Reported exploitation

Technologies

Your stack

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Your stack

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