devitemsllc ShopLentor Plugin up to 3.3.7 on WordPress REST API Endpoint custom-action handle_action callback code injection

Summaryinfo

A vulnerability was found in devitemsllc ShopLentor Plugin up to 3.3.7 and classified as problematic. Impacted is the function handle_action of the file /woolentoropt/v1/custom-action of the component REST API Endpoint. Such manipulation of the argument callback leads to code injection. This vulnerability is listed as CVE-2026-6020. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in devitemsllc ShopLentor Plugin up to 3.3.7. Affected by this issue is the function handle_action of the file /woolentoropt/v1/custom-action of the component REST API Endpoint. The manipulation of the argument callback with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The ShopLentor plugin for WordPress is vulnerable to arbitrary function execution via the woolentoropt/v1/custom-action REST API endpoint in all versions up to, and including, 3.3.7. This is due to the handle_action() method passing user-supplied input directly to call_user_func() without an allowlist of permitted callbacks. This makes it possible for authenticated attackers, with Administrator-level access and above, to execute arbitrary PHP callable functions via the 'callback' parameter.

The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-6020 since 04/09/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/05/2026). This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• devitemsllc

Name

• ShopLentor Plugin

Version

• 3.3.0
• 3.3.1
• 3.3.2
• 3.3.3
• 3.3.4
• 3.3.5
• 3.3.6
• 3.3.7

CPE 2.3info

• 🔒
• 🔒
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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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