CVE-2023-34387 MEDIUM

CVE-2023-34387: WordPress Constant Contact Forms plugin <= 2.0.3 - Broken Access Control vulnerability

Vendor Constant Contact
Product Constant Contact Forms
Weakness CWE-862 · Missing authorization
Published December 13, 2024
Last update April 28, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Missing Authorization vulnerability in Constant Contact Constant Contact Forms allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Constant Contact Forms: from n/a through 2.0.3.

Explanation of Vulnerability in Simple Terms

02Summary

Constant Contact Forms versions up to 2.0.3 lack proper authorization checks, allowing authenticated users to modify form data they should not have access to. An attacker with a low-privilege account can alter form settings or content belonging to other users or forms. The vulnerability requires valid login credentials but no additional user interaction.

What an attacker can do

03Attacker Capabilities

Modify form data and settings belonging to other users or forms.

Potential impact on your site

04Site Impact

Unauthorized users can alter or corrupt forms managed by other team members or administrators.

Conditions required to exploit

05Prerequisites

Attacker must have a valid low-privilege account on the site.

Key dates

06Disclosure timeline

December 13, 2024 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE