CVE-2023-4840

MapPress Maps for WordPress <= 2.88.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

6.4 Medium

The MapPress Maps for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'mappress' shortcode in versions up to, and including, 2.88.4 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.55%Up 0.5 points since Sep 12, 2023

What each source reports

CVE List Score used 6.4

MapPress Maps for WordPress <= 2.88.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Record: CVE-2023-4840
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2023-54681 6.4

Record: EUVD-2023-54681
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-4w3f-rrjx-gp6x 5.4

The MapPress Maps for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting...

Record: GHSA-4w3f-rrjx-gp6x
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 6.4

Record: CVE-2023-4840
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
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-2023-4840 is a medium vulnerability (CVSS 6.4) in Chrisvrichardson Mappress Maps For Wordpress, published September 12, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.55%, the 46th percentile. No source names a fixed version.