What is the CVSS score of EUVD-2026-20892?

EUVD-2026-20892 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%.

WordPress EUVD-2026-20892

| CVE-2026-3005 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-04-09 Wordfence

WordPress XSS

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

Apr 09, 2026 - 13:00 euvd

EUVD-2026-20892

Analysis Generated

Apr 09, 2026 - 13:00 vuln.today

CVE Published

Apr 09, 2026 - 12:28 nvd

MEDIUM 6.4

DescriptionCVE.org

The List category posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'catlist' shortcode in all versions up to, and including, 0.94.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

AnalysisAI

Stored cross-site scripting in List Category Posts plugin for WordPress (all versions up to 0.94.0) allows authenticated contributors and above to inject arbitrary JavaScript via insufficiently sanitized shortcode attributes, enabling persistent payload execution whenever affected pages are accessed. CVSS 6.4 reflects moderate confidentiality and integrity impact with network-level access; exploitation requires contributor-level WordPress account.

Technical ContextAI

The vulnerability exists in the 'catlist' shortcode handler within the List Category Posts plugin (cpe:2.3:a:fernandobt:list_category_posts), specifically in the shortcode attribute parsing logic. The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation-Cross-site Scripting), arising from missing input sanitization and output HTML escaping on user-supplied shortcode attributes. When the shortcode is processed and rendered, attacker-controlled attribute values are reflected into the page DOM without proper escaping, allowing execution of arbitrary JavaScript in the browser context of any user viewing that page. The vulnerable code path involves the lcp-thumbnail.php component (referenced in the plugin repository), where attribute processing occurs.

RemediationAI

Update List Category Posts plugin to version 0.94.1 or later once released by the vendor. Refer to the Wordfence vulnerability advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/1a93ff8a-364f-4ec4-9c32-208c7a3e1fc1 and the WordPress plugin changeset (https://plugins.trac.wordpress.org/changeset/3482733/) for confirmation of the fix. As a temporary mitigation, restrict contributor-level user accounts to trusted editors only, or disable the 'catlist' shortcode if not in active use. Ensure WordPress and all plugins remain up-to-date and monitor the plugin repository for patched versions.