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CVE-2023-4243

8.8 · HIGH

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.

Published Aug 9, 2023CWE-285EPSS 0.90%

Overview

CVE-2023-4243 is a high-severity vulnerability. It was published on August 9, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/full-customer/tags/1.1.0/app/api/Plugin.phpRefplugins.trac.wordpress.org/browser/full-customer/tags/2.2.1/app/api/PluginInstallation.phpRefplugins.trac.wordpress.org/browser/full-customer/tags/2.3/app/api/Controller.php?rev=2951561Refwww.wordfence.com/threat-intel/vulnerabilities/id/9799df3f-e34e-42a7-8a72-fa57682f7014?source=cveRefplugins.trac.wordpress.org/browser/full-customer/tags/1.1.0/app/api/Plugin.phpRefplugins.trac.wordpress.org/browser/full-customer/tags/2.2.1/app/api/PluginInstallation.phpRefwww.wordfence.com/threat-intel/vulnerabilities/id/9799df3f-e34e-42a7-8a72-fa57682f7014?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2023-4243?

CVE-2023-4243 is a high-severity vulnerability. It was published on August 9, 2023 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2023-4243?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-4243?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-4243?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-4243 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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