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CVE-2023-4719

Simple Membership <= 4.3.5 - Reflected Cross-Site Scripting

MEDIUM
6.1
CVSS Score
Published: September 6, 2023 at 01:52 AM UTC
Updated: June 17, 2026 at 06:38 AM UTC
2 products affected across 2 vendorsSimple MembershipSimple Membership

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

The Simple Membership plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `list_type` parameter in versions up to, and including, 4.3.5 due to insufficient input sanitization and output escaping. Using this vulnerability, unauthenticated attackers could inject arbitrary web scripts into pages that are being executed if they can successfully trick a user into taking an action, such as clicking a malicious link.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Simple Membership· Simple Membership Pluginwordpress-plugin
95%
v < 4.3.6
Affected range stops below 4.3.6, so it looks safe — our inference, not a vendor statement
Simple Membership· Wpinsider 1wordpress-plugin
60%
v ≤ 4.3.5

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Patch
Source: [email protected]
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2962730%40simple-membership&new=2962730%40simple-membership&sfp_email=&sfph_mail=
Product
Source: [email protected]
https://wordpress.org/plugins/simple-membership/
Third Party Advisory
Source: [email protected]
https://www.wordfence.com/threat-intel/vulnerabilities/id/e4b10172-7e54-4ff8-9fbb-41d160ce49e4?source=cve

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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