CVE•Published 2023-08-09•Modified 2026-04-08•1 article on news•6 live references•NVD data

CVE-2023-4243Full · Full_-_customer

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 27% of all CVEs

Weaknesses (CWE)

CWE-285Improper Authorization CWE-434Unrestricted Upload of File with Dangerous Type

Description

The FULL - Customer plugin for WordPress is vulnerable to Arbitrary File Upload via the /install-plugin REST route in versions up to, and including, 2.2.3 due to improper authorization. This allows authenticated attackers with subscriber-level permissions and above to execute code by installing plugins from arbitrary remote locations including non-repository sources onto the site, granted they are packaged as a valid WordPress plugin.

Timeline

Published 2023-08-09

Modified 2026-04-08

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2023-4243

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · WP plugin path

http.html:"/wp-content/plugins/full---customer/"

Matches any site loading the "full---customer" plugin — doesn't rely on Shodan's vuln tag.

Shodan · product

product:"Full Full - Customer"

All exposed Full Full - Customer instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Full - Customer"

HTTP body or banner mentions "Full - Customer" — catches deploys Shodan didn't identify as a product.