What is the CVSS score of EUVD-2026-15557?

EUVD-2026-15557 has a CVSS 3.1 base score of 6.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Ultimate Post Kit are affected by EUVD-2026-15557?

CVE-2026-24362 presents moderate security risk, a missing authorization vulnerability rated CVSS 6.4. Attackers could gain access beyond their authorized level.

How to fix or mitigate EUVD-2026-15557?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Ultimate Post Kit EUVD-2026-15557

| CVE-2026-24362 MEDIUM

Missing Authorization (CWE-862)

2026-03-25 Patchstack

Authentication Bypass Ultimate Post Kit

6.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.4 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Mar 25, 2026 - 16:47 euvd

EUVD-2026-15557

Analysis Generated

Mar 25, 2026 - 16:47 vuln.today

CVE Published

Mar 25, 2026 - 16:14 nvd

MEDIUM 6.4

DescriptionCVE.org

Missing Authorization vulnerability in bdthemes Ultimate Post Kit ultimate-post-kit allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ultimate Post Kit: from n/a through <= 4.0.21.

AnalysisAI

A missing authorization vulnerability exists in bdthemes Ultimate Post Kit WordPress plugin through version 4.0.21, where incorrectly configured access control allows attackers to bypass authentication mechanisms and exploit broken access control security levels. An attacker can leverage this vulnerability to perform unauthorized actions that should be restricted to authenticated or privileged users. While no CVSS score, EPSS data, or confirmed KEV status is currently available, the vulnerability is classified under CWE-862 (Missing Authorization) and has been documented by Patchstack, indicating active research and potential exploitation concern.

Technical ContextAI

The vulnerability is rooted in CWE-862 (Missing Authorization), a fundamental access control flaw where the application fails to verify that a user has proper authorization before allowing access to sensitive functionality or data. Ultimate Post Kit is a WordPress plugin (cpe:2.3:a:bdthemes:ultimate_post_kit:*:*:*:*:*:*:*:*) that extends WordPress post display capabilities through custom widgets and templates. The broken access control stems from inadequately implemented capability checks or role-based access control (RBAC) mechanisms within WordPress plugin functions, likely in AJAX handlers, REST API endpoints, or admin action callbacks. The plugin's lack of proper nonce validation and capability verification allows attackers to bypass WordPress's built-in permission checks (typically relying on current_user_can() function calls), directly exploiting the plugin's custom functionality without proper authentication context.

RemediationAI

Immediately upgrade Ultimate Post Kit to the latest available version beyond 4.0.21, which should include authorization security fixes. Users must verify that patched versions are available from the bdthemes official repository or WordPress.org plugin directory before patching. In the interim, if a patch is unavailable or delayed, restrict plugin access by disabling the Ultimate Post Kit plugin entirely, reverting to alternative post display solutions, or enforcing strict network-level access controls to limit exposure to trusted administrator IP ranges only. Additionally, conduct a security audit of any custom Post Kit functionality to ensure WordPress capability checks (current_user_can() calls) and nonce verification are properly implemented on all user-facing actions and AJAX endpoints. Review user roles and capabilities to ensure least-privilege access is enforced. Monitor the Patchstack database and bdthemes official channels for patch release announcements and apply updates as soon as available.