CVE-2026-3223Public exploit

Arbitrary file write via ZIP path traversal

Published Feb 27, 2026 · Updated Feb 27, 2026

Path traversal in Google Web Designer before 14.2.2.0 allows local users to write arbitrary files via a crafted ZIP archive. During ZIP extraction, archive member paths are not confined to the intended destination, so traversal segments write files outside it. Exploitation requires active user interaction; Google has not disclosed the affected archive workflow or a demonstrated privilege-escalation chain.

CVSS severity8.4
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Google Web Designer before 14.2.2.0 allows local users to write arbitrary files via a crafted ZIP archive. During ZIP extraction, archive member paths are not confined to the intended destination, so traversal segments write files outside it. Exploitation requires active user interaction; Google has not disclosed the affected archive workflow or a demonstrated privilege-escalation chain.

The record

CVE
CVE-2026-3223
Published
Feb 27, 2026
Updated
Feb 27, 2026
Vendor
Go standard library
Product
Google Web Designer
Classifications
CWE-22, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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=0 <14.2.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Go standard library · Google Web Designerversion=0 <14.2.2.0

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.4Google Inc.CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1204.002User Execution: Malicious File

Public exploit references

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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