What is the CVSS score of EUVD-2026-20531?

EUVD-2026-20531 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of WordPress are affected by EUVD-2026-20531?

ProSolution WP Client plugin versions 1.9.9 and earlier contain a critical unauthenticated file upload vulnerability (CVSS 9.8) that allows attackers to execute arbitrary code on WordPress servers…

WordPress EUVD-2026-20531

| CVE-2026-2942 CRITICAL

Unrestricted Upload of File with Dangerous Type (CWE-434)

2026-04-08 Wordfence

GHSA-58qw-hm39-96q8

WordPress RCE File Upload

9.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Re-analysis Queued

Apr 24, 2026 - 18:07 vuln.today

cvss_changed

EUVD ID Assigned

Apr 08, 2026 - 19:31 euvd

EUVD-2026-20531

Analysis Generated

Apr 08, 2026 - 19:31 vuln.today

CVE Published

Apr 08, 2026 - 17:25 nvd

CRITICAL 9.8

DescriptionNVD

The ProSolution WP Client plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'proSol_fileUploadProcess' function in all versions up to, and including, 1.9.9. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

AnalysisAI

Unauthenticated arbitrary file upload in ProSolution WP Client plugin (≤1.9.9) enables attackers to upload executable files without validation via the 'proSol_fileUploadProcess' function, leading to remote code execution on WordPress servers. Critical severity (CVSS 9.8) with network-accessible attack vector requiring no authentication or user interaction. …

RemediationAI

Within 24 hours: Immediately disable and deactivate ProSolution WP Client plugin on all WordPress installations; audit server logs for suspicious file uploads to wp-content/uploads and plugin directories since plugin deployment. Within 7 days: Remove the plugin entirely and replace with alternative functionality; scan all uploaded files for webshells or malicious executables; review WordPress user accounts for unauthorized administrative access created during potential exploitation window. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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EUVD-2026-20531 vulnerability details – vuln.today

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WordPress EUVD-2026-20531

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

RemediationAI

Full analysis requires sign-in

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External POC / Exploit Code