wpeverest User Registration & Membership Plugin up to 5.1.4 on WordPress REST API Endpoint check_permissions authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k0.00

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.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202603-4627) and EUVD (EUVD-2026-14656). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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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
03/28/2026 +4 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
EUVD: 🔒
CNNVD: CNNVD-202603-4627 - WordPress plugin User Registration & Membership 安全漏洞

Entryinfo

Created: 03/24/2026 02:54
Updated: 03/28/2026 09:37
Changes: 03/24/2026 02:54 (67), 03/24/2026 06:04 (1), 03/25/2026 17:55 (6), 03/28/2026 09:37 (1)
Complete: 🔍
Cache ID: 216:749:103

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