CVE-2024-4383 Simple Membership <= 4.4.5 - Authenticated(Contributor+) Stored Cross-Site Scripting via Shortcode

What is CVE-2024-4383?

CVE-2024-4383 is a medium-severity cross-site scripting vulnerability in wpinsider-1 Simple Membership, published on 9 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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, 4.4.5 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 user accesses an injected page.

Weakness: CWE-79

Which versions are affected by CVE-2024-4383?

It affects 1 product.

Products include Simple-Membership-Plugin Simple Membership.

How do I fix CVE-2024-4383?

No fix has been published for CVE-2024-4383 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-4383 being exploited?

There is no known exploitation of CVE-2024-4383 in the wild and no public exploit code.

Other vulnerabilities in wpinsider-1 Simple Membership

• CVE-2022-2317 Simple Membership < 4.1.3 - Unauthenticated Membership Privilege Escalation Critical 9.8
• CVE-2023-41956 WordPress Simple Membership plugin <= 4.3.4 - Authenticated Account Takeover vulnerability High 8.8
• CVE-2022-2273 Simple Membership < 4.1.3 - Membership Privilege Escalation High 8.8
• CVE-2016-10884 Cross-site request forgery in n/a High 8.8
• CVE-2019-14328 Cross-site request forgery in n/a High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-c7vh-4v2j-w7vm.