CVE-2024-0899

s2Member – Best Membership Plugin for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions <= 230815 - Information Exposure

2024-03-18 00:00

Strategic Overview

Status: Patched in 240315
Affected Plugin: s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions
Affected Version: <= 230815
CVSS: 5.3Medium
Weakness type: CWE-284 · Improper Access Control
CVE: CVE-2024-0899

View all s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions vulnerabilities

At a glance

CVE-2024-0899 is a medium-severity Improper Access Control vulnerability in the s2Member WordPress plugin, affecting versions <= 230815. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 240315; sites on affected versions should update now. Disclosed March 2024, reported by Francesco Carlucci.

Vulnerability Overview

The s2Member – Best Membership Plugin for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 230815 via the API. This makes it possible for unauthenticated attackers to see the contents of those posts and pages.

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 privileges on the target site, and no interaction from a victim user.

CWE-284: Improper Access Control

Reaching this weakness in s2Member <= 230815 takes a caller who can reach the endpoint. Improper access control means the code decides what a caller may do using something other than their actual permissions, so the decision can be wrong without any check appearing to be missing.

Whoever can shape the request decides the answer, so the protected action runs for callers the code never meant to allow. For s2Member the fix is 240315: builds <= 230815 are affected, anything from 240315 onward is not.

Remediation

Update to version 240315, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: s2Member 240315 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-0899 https://www.wordfence.com/threat-intel/vulnerabilities/id/80bfb470-a3df-497f-940d-051ccaa6215b https://nvd.nist.gov/vuln/detail/CVE-2024-0899

Related records

Other vulnerabilities in s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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