Simple Membership
CVE-2023-50376
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.1 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. EPSS exploitation probability: 0.13%. |
| Exploit ScenarioDerived | A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in smp7, wp.Insider Simple Membership allows Reflected XSS.3.8. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in smp7, wp.Insider Simple Membership allows Reflected XSS.3.8. Affected products include: Simple-Membership-Plugin Simple Membership. Version information: through 4.3.8..
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in smp7, wp.Insider Simple Membership allows Reflected XSS.This issue affects Simple Membership: from n/a through 4.3.8.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)CVE.org
More in Simple Membership
View allThe Simple Membership WordPress plugin before 4.1.3 allows user to change their membership at the registration stage due
Account takeover of the primary WordPress administrator affects the Simple Membership plugin in all versions before 4.7.
Stored/reflected cross-site scripting in the Simple Membership WordPress plugin before 4.7.5 lets unauthenticated attack
The Simple Membership WordPress plugin before 4.1.3 does not properly validate the membership_level parameter when editi
The Simple Membership plugin before 3.8.5 for WordPress has CSRF affecting the Bulk Operation section. Rated high severi
The Simple Membership WordPress plugin before 4.1.0 does not have CSRF check in place when deleting Transactions, which
Stored cross-site scripting in the Simple Membership WordPress plugin before 4.7.8 allows unauthenticated attackers to i
The Simple Membership WordPress plugin before 4.1.1 does not properly sanitise and escape parameters before outputting t
Privilege escalation in the Simple Membership WordPress plugin before 4.7.8 allows authenticated members to obtain highe
Simple Membership, a WordPress membership plugin, transmits a newly registered member's plaintext password in a URL quer
The Simple Membership WordPress plugin before 4.0.9 does not have CSRF check when deleting members in bulk, which could
Unauthenticated attackers can redirect activation and registration-complete emails to an arbitrary address in Simple Mem
GitHub PoC
Exploit-DB