The s2Member plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 250701 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
CVE-2025-58998 is a high severity with CVSS 8.1 Vulnerability issue affecting the Plugin s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions. It affects Versions up to 250701 and is fixed in 250905.
CVE-2025-58998 is tracked for the Plugin s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions as high severity with CVSS 8.1. The affected range is Versions up to 250701. Update s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions to 250905 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
s2member
View on wordpress.org
|
| CVE | CVE-2025-58998 |
| Patched Versions |
250905
|
| Affected Versions |
Versions up to 250701
|
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 (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
s2Member <= 251005 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
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