How severe is CVE-2023-4719?

CVE-2023-4719 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-4719 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4719?

CVE-2023-4719 affects Simple-membership-plugin Simple Membership. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4719?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-4719 published?

CVE-2023-4719 was published on 2023-09-06 and last updated on 2026-06-17.

CVE-2023-4719

CVE-2023-4719 is a high-severity vulnerability in Simple-membership-plugin Simple Membership with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Simple-membership-plugin Simple Membership
Published: 2023-09-06
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-4719?: 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.
How severe is CVE-2023-4719?: CVE-2023-4719 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-4719 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4719?: CVE-2023-4719 affects Simple-membership-plugin Simple Membership. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4719?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-4719 published?: CVE-2023-4719 was published on 2023-09-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:simple-membership-plugin:simple_membership:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Simple-membership-plugin Simple Membership

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