What is the CVSS score of CVE-2026-1499?

CVE-2026-1499 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.7%.

Which versions of WordPress are affected by CVE-2026-1499?

A critical vulnerability in the WP Duplicate WordPress plugin allows attackers to upload arbitrary files and bypass authentication, potentially leading to complete website compromise.

How to fix or mitigate CVE-2026-1499?

Within 24 hours: Audit all WordPress installations for WP Duplicate plugin presence and immediately disable/deactivate the plugin. Within 7 days: If the plugin is business-critical, engage the vendor for timeline confirmation and implement compensating controls (WAF rules, IP restrictions, access logging). Within 30 days: Replace the plugin with an alternative solution or migrate to a patched version once available; conduct forensic analysis for signs of exploitation.

WordPress CVE-2026-1499

HIGH

Missing Authorization (CWE-862)

2026-02-06 security@wordfence.com

WordPress Authentication Bypass RCE Path Traversal File Upload

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Feb 06, 2026 - 09:15 nvd

HIGH 8.8

DescriptionCVE.org

The WP Duplicate plugin for WordPress is vulnerable to Missing Authorization leading to Arbitrary File Upload in all versions up to and including 1.1.8. This is due to a missing capability check on the process_add_site() AJAX action combined with path traversal in the file upload functionality. This makes it possible for authenticated (subscriber-level) attackers to set the internal prod_key_random_id option, which can then be used by an unauthenticated attacker to bypass authentication checks and write arbitrary files to the server via the handle_upload_single_big_file() function, ultimately leading to remote code execution.

AnalysisAI

WP Duplicate WordPress plugin has a missing authorization vulnerability leading to arbitrary file deletion that can destroy the WordPress installation.