CVE-2023-4719 Simple Membership <= 4.3.5 - Reflected Cross-Site Scripting

What is CVE-2023-4719?

CVE-2023-4719 is a high-severity cross-site scripting vulnerability in wpinsider-1 Simple Membership, published on 6 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-79

Which versions are affected by CVE-2023-4719?

It affects 1 product.

Products include Simple-Membership-Plugin Simple Membership.

How do I fix CVE-2023-4719?

No fix has been published for CVE-2023-4719 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-2023-4719 being exploited?

There is no known exploitation of CVE-2023-4719 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-fwcj-v244-qf8f.