CVE-2024-12563

s2Member Pro <= 250214 - Authenticated (Contributor+) Local File Inclusion to Remote Code Execution via Shortcode

2025-03-18 00:00
István Márton

Strategic Overview

Status
Patched in 250419
Affected Plugin
s2Member Pro
Affected Version
<= 250214
CVSS
8.8High
Weakness type
CWE-98 · Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
CVE
CVE-2024-12563
View all s2Member Pro vulnerabilities

At a glance

CVE-2024-12563 is a high-severity Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in the s2Member Pro WordPress plugin, affecting versions <= 250214. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 250419; sites on affected versions should update now. Disclosed March 2025, reported by István Márton.

Vulnerability Overview

The s2Member Pro plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 250214 via the 'template' attribute. This makes it possible for authenticated attackers, with contributor-level and above permissions, to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')

s2Member Pro <= 250214 carries this weakness at template, and reaching it takes an account at Contributor level or above. PHP file inclusion means a path used by include or require is built from request data, so the file that gets executed is under the caller's influence.

Including an attacker-influenced file executes its contents, which is why this class is routinely chained with an upload or log-poisoning step to reach code execution. For s2Member Pro the fix is 250419: builds <= 250214 are affected, anything from 250419 onward is not.

Remediation

Update to version 250419, or a newer patched version

How does WordSec protect against this?

An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: s2Member Pro 250419 closes this, and updating the plugin is the step that ends it.

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External References

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