CVE-2023-6882

MEDIUM 6.1

Simple Membership <= 4.3.8 - Reflected Cross-Site Scripting Vulnerability via environment_mode

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

The Simple Membership plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘environment_mode’ parameter in all versions up to, and including, 4.3.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

CWE	CWE-79
Vendor	wpinsider-1
Product	simple membership
Published	Jan 11, 2024
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

wpinsider-1 / Simple Membership

0 ≤ 4.3.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/366165fe-93e5-49ab-b2e5-1de624f22286?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3010737/simple-membership

Credits

Rein Daelman