CVE-2023-51409Public exploitNetwork attack vector

Remote code execution via unrestricted REST upload

Published Apr 12, 2024 · Updated Apr 28, 2026

Unrestricted file upload in Jordy Meow AI Engine 1.9.98 and earlier allows remote attackers to execute PHP code on WordPress sites. The rest_upload handler on the mwai-ui/v1/files/upload REST route accepts every caller, derives a server path from the submitted filename, and passes the upload to move_uploaded_file without validating its type or extension. The flaw is reachable without authentication on a default installation; a PHP payload can become a web shell with the WordPress server account's privileges.

CVSS severity10.0
Critical
EPSS probability63.08%
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 Jordy Meow AI Engine 1.9.98 and earlier allows remote attackers to execute PHP code on WordPress sites. The rest_upload handler on the mwai-ui/v1/files/upload REST route accepts every caller, derives a server path from the submitted filename, and passes the upload to move_uploaded_file without validating its type or extension. The flaw is reachable without authentication on a default installation; a PHP payload can become a web shell with the WordPress server account's privileges.

The record

CVE
CVE-2023-51409
Published
Apr 12, 2024
Updated
Apr 28, 2026
Vendor
Jordy Meow
Product
AI Engine
Classifications
CWE-434, T1190, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=0.0.1 <=1.9.98
  2. Affected versionversion=n/a <=1.9.98 changes=[{"at":"1.9.99","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jordy Meow · AI Engineversion=0.0.1 <=1.9.98; version=n/a <=1.9.98 changes=[{"at":"1.9.99","status":"unaffected"}]

Published CVSS scores

10.0PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application
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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