The s2Member Pro plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 241216 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.
CVE-2025-26879 is a medium severity with CVSS 6.1 Cross-Site Scripting issue affecting the Plugin s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions. It affects Versions up to 241216 and is fixed in 250214.
CVE-2025-26879 is tracked for the Plugin s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions as medium severity with CVSS 6.1. The affected range is Versions up to 241216. Update s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions to 250214 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
s2member
View on wordpress.org
|
| CVE | CVE-2025-26879 |
| Patched Versions |
250214
|
| Affected Versions |
Versions up to 241216
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
s2Member <= 260127 - Unauthenticated Privilege Escalation via Account Takeover
s2Member <= 250905 - Unauthenticated Remote Code Execution
s2Member <= 240315 - Limited Privilege Escalation
s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions <= 241114 - Authenticated (Contributor+) Sensitive Information Exposure
s2Member <= 250701 - Unauthenticated PHP Object Injection
s2Member (Pro) <= 241114 - Unauthenticated Remote Code Execution
s2Member <= 250419 - Authenticated (Administrator+) Local File Inclusion
s2Member® Framework (Membership, Member Level Roles, Access Capabilities, PayPal Members) < 111220 - Cross-Site Scripting
This record contains material that is subject to copyright
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. Read more
License: CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. Read more
