CVE-2023-4311Public exploitNetwork attack vector

Authenticated code execution via shortcode file upload

Published Dec 18, 2023 · Updated Aug 2, 2024

Unrestricted file upload in Maurice Vrm 360 3D Model Viewer 1.2.1 and earlier allows remote authenticated users to upload executable files. The vrm360 shortcode accepts a model_url value, fetches the named remote file, and writes it under wp-content/uploads/tmp without validating its type. Contributor-level access is required; an uploaded PHP file can then execute in the WordPress server context when requested.

CVSS severity8.8
High
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Maurice Vrm 360 3D Model Viewer 1.2.1 and earlier allows remote authenticated users to upload executable files. The vrm360 shortcode accepts a model_url value, fetches the named remote file, and writes it under wp-content/uploads/tmp without validating its type. Contributor-level access is required; an uploaded PHP file can then execute in the WordPress server context when requested.

The record

CVE
CVE-2023-4311
Published
Dec 18, 2023
Updated
Aug 2, 2024
Vendor
Maurice
Product
Vrm 360 3D Model Viewer
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 <=1.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Maurice · Vrm 360 3D Model Viewerversion=0 <=1.2.1

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell

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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