What is the CVSS score of CVE-2026-8422?

CVE-2026-8422 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.0%.

Remove Meta Boxes Per User Role CVE-2026-8422

EUVD-2026-33898 MEDIUM

Cross-Site Request Forgery (CSRF) (CWE-352)

2026-06-02 Wordfence

GHSA-fv5f-r3j5-3jxv

WordPress CSRF

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Jun 02, 2026 - 08:50 vuln.today

CVE Published

Jun 02, 2026 - 07:48 nvd

MEDIUM 4.3

DescriptionCVE.org

The Remove meta boxes per user role plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.01. This is due to missing or incorrect nonce validation on the 'remove-meta-boxes-per-user-role' page. This makes it possible for unauthenticated attackers to modify or reset the plugin's per-role meta box visibility settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

AnalysisAI

Cross-Site Request Forgery in the Remove Meta Boxes Per User Role WordPress plugin (all versions ≤1.01) enables unauthenticated remote attackers to modify or reset per-role admin dashboard meta box visibility settings by tricking an authenticated site administrator into clicking a crafted link. The vulnerability stems from absent or incorrect nonce validation on the plugin's settings page, which is the standard WordPress anti-CSRF mechanism. No public exploit has been identified and the issue is not listed in CISA KEV; real-world impact is limited to low-integrity administrative configuration tampering.

Technical ContextAI

The plugin (CPE: cpe:2.3:a:mr_mat:remove_meta_boxes_per_user_role:*:*:*:*:*:*:*:*) provides WordPress administrators the ability to control which meta boxes are displayed on the dashboard per user role. CWE-352 (Cross-Site Request Forgery) arises because the 'remove-meta-boxes-per-user-role' settings handler in admin_pages/settings.php (lines 23 and 26) and the main plugin entrypoint remove-meta-boxes-per-role.php (line 52) do not call wp_verify_nonce() or equivalent nonce checking before processing state-changing requests. WordPress nonces are single-use cryptographic tokens embedded in legitimate admin forms that prevent forged cross-origin requests; their absence means the application cannot distinguish a genuine administrator action from one crafted by an attacker. Because browsers automatically include session cookies on any matching request, a forged request from a malicious page is processed identically to a legitimate one.

RemediationAI

No vendor-released patched version is confirmed in the available data; administrators should monitor the plugin's WordPress SVN repository at https://plugins.trac.wordpress.org/browser/remove-meta-boxes-per-user-role/ for an updated release that introduces wp_verify_nonce() validation on the settings page handler. As an immediate compensating control, consider deactivating or uninstalling the plugin until a fix is released - the trade-off is loss of per-role meta box visibility customization, which is a low-criticality administrative feature. Restricting WordPress admin access (/wp-admin/) to trusted IP ranges via server or WAF rules will reduce the attack surface for all CSRF-dependent attacks, at the cost of reduced remote administrative flexibility. Training administrators to be cautious about clicking unsolicited links while authenticated to WordPress admin is an additional low-overhead mitigation. For the upstream fix, the vendor must add nonce creation (wp_nonce_field()) to the settings form and nonce verification (check_admin_referer()) to the request handler at the referenced source lines.