CVE-2023-6827 Essential Real Estate <= 4.3.5 - Authenticated (Subscriber+) Arbitrary File Upload

What is CVE-2023-6827?

CVE-2023-6827 is a high-severity vulnerability in g5theme Essential Real Estate, published on 15 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The Essential Real Estate plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation on the 'ajaxUploadFonts' function in versions up to, and including, 4.3.5. This makes it possible for authenticated attackers with subscriber-level capabilities or above, to upload arbitrary files on the affected site's server which may make remote code execution possible. CVE-2023-6140 appears to be a duplicate of this issue.

Weakness: CWE-434

Which versions are affected by CVE-2023-6827?

It affects 1 product.

Products include G5plus Essential Real Estate.

How do I fix CVE-2023-6827?

No fix has been published for CVE-2023-6827 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-6827 being exploited?

There is no known exploitation of CVE-2023-6827 in the wild and no public exploit code.

Other vulnerabilities in g5theme Essential Real Estate

• CVE-2023-6140 Essential Real Estate < 4.4 - Subscriber+ Arbitrary File Upload High 8.8
• CVE-2025-48126 WordPress Essential Real Estate plugin <= 5.2.9 - Local File Inclusion vulnerability High 8.1
• CVE-2025-30849 WordPress Essential Real Estate plugin <= 5.2.0 - Local File Inclusion Vulnerability High 8.1
• CVE-2023-6139 Essential Real Estate < 4.4.0 - Subscriber+ Denial of Service via Arbitrary Option Update Medium 6.5
• CVE-2024-4273 Essential Real Estate <= 4.4.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Medium 6.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-rxq3-gmwr-j659.