WordPress plugin
Simple Membership security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 39 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical1
- High12
- Medium25
- Low1
All Simple Membership vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.5 | Missing Authorization to Unauthenticated Account Takeover and Sensitive Information Disclosure via 'email' Parameter on Activation Endpoints ≤4.8.3Update to 4.8.4 | CVE-2026-97337 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤4.7.7Update to 4.7.8 | CVE-2026-15931 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤4.7.4Update to 4.7.5 | CVE-2026-11855 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤4.7.2Update to 4.7.3 | CVE-2026-42663 | |
| High8.8 | Account Takeover via Password Reset ≤4.3.4Update to 4.3.5 | CVE-2023-41956 | |
| High7.3 | Privilege escalation via Registration ≤4.3.4Update to 4.3.5 | CVE-2023-41957 | |
| High7.2 | Reflected Cross-Site Scripting ≤4.3.5Update to 4.3.6 | CVE-2023-4719 | |
| High8.8 | Membership Privilege Escalation ≤4.1.2Update to 4.1.3 | CVE-2022-2273 | |
| Critical9.8 | Membership Privilege Escalation ≤4.1.2Update to 4.1.3 | CVE-2022-2317 | |
| High8.8 | Cross-Site Request Forgery to Arbitrary Member Deletion <4.0.9Update to 4.0.9 | CVE-2022-0328 | |
| High7.2 | Authenticated (Admin+) SQL Injections ≤4.0.3Update to 4.0.4 | — | |
| High8.8 | Cross-Site Request Forgery <3.8.5Update to 3.8.5 | CVE-2019-14328 | |
| High8.8 | Multiple Cross-Site Request Forgery ≤3.3.2Update to 3.3.3 | CVE-2016-10884 |
- High7.5Missing Authorization to Unauthenticated Account Takeover and Sensitive Information Disclosure via 'email' Parameter on Activation Endpoints
≤4.8.3Update to 4.8.4
- High7.2Unauthenticated Stored Cross-Site Scripting
≤4.7.7Update to 4.7.8
- High7.2Unauthenticated Stored Cross-Site Scripting
≤4.7.4Update to 4.7.5
- High7.2Unauthenticated Stored Cross-Site Scripting
≤4.7.2Update to 4.7.3
- High8.8Account Takeover via Password Reset
≤4.3.4Update to 4.3.5
- High7.3Privilege escalation via Registration
≤4.3.4Update to 4.3.5
- High7.2Reflected Cross-Site Scripting
≤4.3.5Update to 4.3.6
- High8.8Membership Privilege Escalation
≤4.1.2Update to 4.1.3
- Critical9.8Membership Privilege Escalation
≤4.1.2Update to 4.1.3
- High8.8Cross-Site Request Forgery to Arbitrary Member Deletion
<4.0.9Update to 4.0.9
- High7.2Authenticated (Admin+) SQL Injections
≤4.0.3Update to 4.0.4
- High8.8Cross-Site Request Forgery
<3.8.5Update to 3.8.5
- High8.8Multiple Cross-Site Request Forgery
≤3.3.2Update to 3.3.3
Simple Membership: common questions
Does Simple Membership have known vulnerabilities?
Yes. VulnCrest Radar lists 39 known vulnerabilities in Simple Membership: 1 critical, 12 high, 25 medium, 1 low. None are known to affect version null.
How do I check which version of Simple Membership I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent Simple Membership vulnerability?
CVE-2026-103427, published Oct 9, 2026: Simple Membership <= 4.8.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Country Field. Severity: Medium (CVSS 6.4).
Is any Simple Membership vulnerability listed in CISA KEV?
No. None of the known Simple Membership vulnerabilities is currently listed in the CISA KEV catalog.