CVE-2023-6635

EditorsKit <= 1.40.3 - Authenticated (Administrator+) Arbitrary File Upload

7.2 High

The EditorsKit plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation on the 'import_styles' function in versions up to, and including, 1.40.3. This makes it possible for authenticated attackers with administrator-level capabilities or above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.54%Up 1.5 points since Feb 8, 2024

What each source reports

CVE List Score used 7.2

EditorsKit <= 1.40.3 - Authenticated (Administrator+) Arbitrary File Upload

Record: CVE-2023-6635
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434, CWE-434
Updated: 2026-11-02

EUVDEUVD-2023-58858 7.2

Record: EUVD-2023-58858
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-q54q-m468-q77v 7.2

The EditorsKit plugin for WordPress is vulnerable to arbitrary file uploads due to missing file...

Record: GHSA-q54q-m468-q77v
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

NVD 7.2

Record: CVE-2023-6635
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-6635 is a high vulnerability (CVSS 7.2) in Extendify Editorskit, published February 5, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.54%, the 75th percentile. No source names a fixed version.