What’s Vulnerable › Vulnerabilities

CVE-2024-11376: s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions <= 241216 - Reflected Cross-Site Scripting

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-18 · updated 2026-06-17
• Weakness: CWE-79

Description

The s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 241114. 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.

Affected products

• clavaque s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions: before 250214 — fixed in 250214

How to fix

Upgrade to a fixed version: clavaque s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions 250214. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/s2member/tags/241114/s2member.php#L210
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3240794%40s2member&new=3240794%40s2member&sfp_email=&sfph_mail=#file1
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0a5c8f46-a686-4b77-8a22-8dec92a96350?source=cve

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