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CVE-2024-3730

Simple Membership <= 4.4.3 - Authenticated(Contributor+) Stored Cross-Site Scripting via Shortcode

MEDIUM
5.4
CVSS Score
Published: April 25, 2024 at 11:00 AM UTC
Updated: June 17, 2026 at 07:44 AM UTC
3 products affected across 3 vendorsSimple MembershipSimple MembershipSimple Membership

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

The Simple Membership plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'swpm_paypal_subscription_cancel_link' shortcode in all versions up to, and including, 4.4.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected

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

Simple Membership· Simple Membership Pluginwordpress-plugin
95%
v < 4.4.4
Affected range stops below 4.4.4, so it looks safe — our inference, not a vendor statement
Simple Membership· WordPresswordpress-plugin
90%
All versions
Simple Membership· Wpinsider 1wordpress-plugin
60%
v ≤ 4.4.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Product
Source: [email protected]
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3076221%40simple-membership&new=3076221%40simple-membership&sfp_email=&sfph_mail=#file31
Third Party Advisory
Source: [email protected]
https://www.wordfence.com/threat-intel/vulnerabilities/id/63779ab7-ba8b-459d-beb3-a32faf8f4394?source=cve

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.4MEDIUMWordfence
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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