WP-Members Membership Plugin up to 3.5.4.2 on WordPress Shortcode code injection

Summaryinfo

A vulnerability identified as critical has been detected in WP-Members Membership Plugin up to 3.5.4.2 on WordPress. Affected by this issue is some unknown functionality of the component Shortcode Handler. Performing a manipulation results in Remote Privilege Escalation. This vulnerability is known as CVE-2025-9489. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in WP-Members Membership Plugin up to 3.5.4.2 on WordPress. It has been classified as critical. This affects some unknown functionality of the component Shortcode Handler. The manipulation with an unknown input leads to a remote privilege escalation vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The The WP-Members Membership Plugin plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.5.4.2. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes.

It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2025-9489. The exploitability is told to be easy. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/09/2025). The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• WP-Members

Name

• Membership Plugin

Version

• 3.5.4.0
• 3.5.4.1
• 3.5.4.2

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CPE 2.2info

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