CVE-2026-4003

216.73.216.6

· Published 08/04/2026 05:16 · Modified 08/04/2026 21:26

Labels: CVE-2026-4003 2026-04-08 CVE-2026-4003 CWE-862 [email protected]

Essential information

Published: 08/04/2026 05:16
Modified: 08/04/2026 21:26
Author: —
Creator: —
CVSS: 9.8 CRITICAL (v3.1)
CISA KEV: No
CWE: —
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS metrics

Description

The Users manager – PN plugin for WordPress is vulnerable to Privilege Escalation via Arbitrary User Meta Update in all versions up to and including 1.1.15. This is due to a flawed authorization logic check in the userspn_ajax_nopriv_server() function within the 'userspn_form_save' case. The conditional only blocks unauthenticated users when the user_id is empty, but when a non-empty user_id is supplied, execution bypasses this check entirely and proceeds to update arbitrary user meta via update_user_meta() without any authentication or authorization verification. Additionally, the nonce required for this AJAX endpoint ('userspn-nonce') is exposed to all visitors via wp_localize_script on the public wp_enqueue_scripts hook, rendering the nonce check ineffective as a security control. This makes it possible for unauthenticated attackers to update arbitrary user metadata for any user account, including the userspn_secret_token field.

NVD status

Status: Awaiting Analysis — CVE has been recently published to the CVE List and has been received by the NVD.
Source: [email protected]
NVD: View on NVD

Affected products (CPE)

Product	CPE
wordpress / users manager pn plugin	`cpe:2.3:a:wordpress:users_manager_pn_plugin::::::wordpress::*`