CVE-2024-4383: The Simple Membership plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'swpm

Q: How do I fix CVE-2024-4383?

simple membership: upgrade to 4.4.6. Exact commands for each OS are on this page.

Q: Is CVE-2024-4383 being exploited?

CVE-2024-4383 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-4383 affect?

CVE-2024-4383 affects simple membership. Severity is medium (CVSS 6.4). 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, 4.4.5 due to insufficient input sanitization and

Q: How urgent is CVE-2024-4383?

Priority 32/100. No elevated risk signals yet.

Routine

MEDIUM 6.4UPGRADE

CVE-2024-4383 is a medium-severity flaw (CVSS 6.4) affecting simple membership. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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, 4.4.5 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 u

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-05-14
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: simple-membership-plugin

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-14 15:43 UTCPublished CVE record published
2026-06-17 08:01 UTCUpdated Record last modified

simple-membership-plugin simple membership UPGRADE

Affected: < 4.4.6

Fixed in: 4.4.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy simple-membership || rpm -q simple-membership || simple-membership --version

2. UPGRADE to 4.4.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade simple-membership

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade simple-membership

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-4383?

simple membership: upgrade to 4.4.6. Exact commands for each OS are on this page.

Is CVE-2024-4383 being exploited?

CVE-2024-4383 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-4383 affect?

CVE-2024-4383 affects simple membership. Severity is medium (CVSS 6.4). 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, 4.4.5 due to insufficient input sanitization and

How urgent is CVE-2024-4383?

Priority 32/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

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CVE-2024-22308 LOW 3.4 UPGRADE URL Redirection to Untrusted Site ('Open Redirect') vulnerability in smp7, wp.Insider Simple Membership.This i
CVE-2024-1985 MEDIUM 4.7 UPGRADE The Simple Membership plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Display Name'
CVE-2024-11088 MEDIUM 5.3 UPGRADE The Simple Membership plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up
CVE-2023-41957 HIGH 8.6 UPGRADE Improper Privilege Management vulnerability in smp7, wp.Insider Simple Membership allows Privilege Escalation.

References

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