CVE-2026-4056 | wpeverest User Registration & Membership Plugin up to 5.1.4 on WordPress REST API Endpoint check_permissions authorization

VDB-352646 · CVE-2026-4056 · GCVE-0-2026-4056 WPEVEREST USER REGISTRATION & MEMBERSHIP PLUGIN UP TO 5.1.4 ON WORDPRESS REST API ENDPOINT CHECK_PERMISSIONS AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.7 $0-$5k 1.93+ Summaryinfo A vulnerability classified as critical was found in wpeverest User Registration & Membership Plugin up to 5.1.4 on WordPress. This affects the function check_permissions of the component REST API Endpoint. Such manipulation leads to authorization. This vulnerability is documented as CVE-2026-4056. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised. Detailsinfo A vulnerability was found in wpeverest User Registration & Membership Plugin up to 5.1.4 on WordPress. It has been rated as critical. Affected by this issue is the function check_permissions of the component REST API Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes: The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the Content Access Rules REST API endpoints in versions 5.0.1 through 5.1.4. This is due to the `check_permissions()` method only checking for `edit_posts` capability instead of an administrator-level capability. This makes it possible for authenticated attackers, with Contributor-level access and above, to list, create, modify, toggle, duplicate, and delete site-wide content restriction rules, potentially exposing restricted content or denying legitimate user access. The weakness was released by darkestmode. The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-4056 since 03/12/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. Upgrading to version 5.1.1 eliminates this vulnerability. Productinfo Type WordPress Plugin Vendor wpeverest Name User Registration & Membership Plugin Version 5.1.0 5.1.1 5.1.2 5.1.3 5.1.4 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.9 VulDB Meta Temp Score: 5.7 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.4 CNA Vector (Wordfence): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-862 / CWE-863 / CWE-285 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: User Registration & Membership Plugin 5.1.1 Timelineinfo 03/12/2026 CVE reserved 03/24/2026 +12 days Advisory disclosed 03/24/2026 +0 days VulDB entry created 03/24/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: darkestmode Status: Confirmed CVE: CVE-2026-4056 (🔒) GCVE (CVE): GCVE-0-2026-4056 GCVE (VulDB): GCVE-100-352646 Entryinfo Created: 03/24/2026 02:54 Changes: 03/24/2026 02:54 (67) Complete: 🔍 Cache ID: 99:D72:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸