Simple Membership <= 4.4.2 - Unauthenticated Stored Self-Based Cross-Site Scripting
Published Mar 13, 2024
6.1
MEDIUMCVSS 3.1
EPSS 0.87%
Description
The Simple Membership plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Display Name' parameter in all versions up to, and including, 4.4.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability requires social engineering to successfully exploit, and the impact would be very limited due to the attacker requiring a user to login as the user with the injected payload for execution.
Affected products
-
- Version 0StatusaffectedConstraints<=4.4.2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Wpinsider-1 | Simple Membership | unaffected |
|
- < 4.4.3
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Mar 13, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2024-2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.87% (0.00867) | 57.29th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.87% (0.00867) | 53.82th | v5 (v2026.06.15) |
| Nov 21, 2025 | 3.29% (0.03287) | 86.72th | v4 (v2025.03.14) |
| Nov 18, 2025 | 7.07% (0.07067) | 90.60th | v4 (v2025.03.14) |
| Aug 2, 2025 | 3.29% (0.03287) | 86.80th | v4 (v2025.03.14) |
| Apr 22, 2025 | 1.87% (0.01870) | 82.06th | v4 (v2025.03.14) |
| Apr 21, 2025 | 7.60% (0.07603) | 91.34th | v4 (v2025.03.14) |
| Apr 15, 2025 | 2.66% (0.02657) | 84.91th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.02% (0.05018) | 88.73th | v4 (v2025.03.14) |
| Mar 29, 2025 | 28.43% (0.28427) | 94.47th | v4 (v2025.03.14) |
| Mar 24, 2025 | 5.02% (0.05018) | 88.73th | v4 (v2025.03.14) |
| Mar 23, 2025 | 21.30% (0.21304) | 94.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.02% (0.05018) | 88.99th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 15.00th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.04% (0.00044) | 13.00th | v3 (v2023.03.01) |
| Mar 14, 2024 | 0.04% (0.00044) | 10.96th | v3 (v2023.03.01) |
References (10)
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/views/edit-v2.php#L103 Product
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/views/edit-v2.php#L112 Product
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/views/edit-v2.php#L121 Product
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/views/edit-v2.php#L130 Product
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/views/edit-v2.php#L139 Product
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/views/edit-v2.php#L157 Product
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/views/edit-v2.php#L85 Product
- https://plugins.trac.wordpress.org/browser/simple-membership/trunk/views/edit-v2.php#L95 Product
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3045036%40simple-membership%2Ftrunk&old=3021218%40simple-membership%2Ftrunk&sfp_email=&sfph_mail= Patch
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8a6ca886-de4c-4d45-a934-3e90378e7eb3?source=cve Third Party Advisory
Change history (0)
No recorded changes yet.