CVE-2023-4243Known exploitationNetwork attack vector

Authenticated code execution via arbitrary plugin install

Published Aug 9, 2023 · Updated Apr 8, 2026

Improper authorization in FULL – Cliente 2.2.3 and earlier allows remote authenticated users to execute code via the /install-plugin REST route. The route accepts plugin packages from arbitrary remote locations, including non-repository sources, without enforcing capability checks beyond subscriber-level access. A valid WordPress plugin archive is required, and successful installation enables code execution with the site's WordPress privileges.

CVSS severity8.8
High
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in FULL – Cliente 2.2.3 and earlier allows remote authenticated users to execute code via the /install-plugin REST route. The route accepts plugin packages from arbitrary remote locations, including non-repository sources, without enforcing capability checks beyond subscriber-level access. A valid WordPress plugin archive is required, and successful installation enables code execution with the site's WordPress privileges.

The record

CVE
CVE-2023-4243
Published
Aug 9, 2023
Updated
Apr 8, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, CWE-285, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8WordfenceCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-285Improper Authorization
T1190Exploit Public-Facing Application

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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