CVE-2023-41957: WordPress Simple Membership plugin <= 4.3.4 - Unauthenticated Membership Role Privilege Escalation vulnerability

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-17 · updated 2026-06-17
Weakness: CWE-269

Description

Improper Privilege Management vulnerability in smp7, wp.Insider Simple Membership allows Privilege Escalation.This issue affects Simple Membership: from n/a through 4.3.4.

Affected products

Simple Membership: before 4.3.5 — fixed in 4.3.5

How to fix

Upgrade to a fixed version: Simple Membership 4.3.5. Check the vendor advisory for mitigations.

References

https://patchstack.com/database/vulnerability/simple-membership/wordpress-simple-membership-plugin-4-3-4-unauthenticated-membership-role-privilege-escalation-vulnerability?_s_id=cve
https://patchstack.com/database/vulnerability/simple-membership/wordpress-simple-membership-plugin-4-3-4-unauthenticated-membership-role-privilege-escalation-vulnerability?_s_id=cve

Get alerted when CVE-2023-41957 or the next vulnerability affects your stack