What is the CVSS score of CVE-2026-1666?

CVE-2026-1666 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of WordPress are affected by CVE-2026-1666?

Organizations using all should be aware of moderate risk from CVE-2026-1666, a cross-site scripting vulnerability rated CVSS 6.1.

How to fix or mitigate CVE-2026-1666?

Within 30 days: Identify affected systems running all and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

WordPress CVE-2026-1666

MEDIUM

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

2026-02-18 security@wordfence.com

WordPress XSS

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 18, 2026 - 07:16 nvd

MEDIUM 6.1

DescriptionCVE.org

The Download Manager plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'redirect_to' parameter in all versions up to, and including, 3.3.46. This is due to insufficient input sanitization and output escaping on the 'redirect_to' GET parameter in the login form shortcode. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

AnalysisAI

The Download Manager plugin for WordPress through version 3.3.46 contains a reflected XSS vulnerability in the 'redirect_to' parameter that allows unauthenticated attackers to inject malicious scripts. An attacker can exploit this by crafting a malicious link that, when clicked by a victim, executes arbitrary JavaScript in their browser session. No patch is currently available for this vulnerability.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Download Manager (WordPress plugin). The Download Manager plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'redirect_to' parameter in all versions up to, and including, 3.3.46. This is due to insufficient input sanitization and output escaping on the 'redirect_to' GET parameter in the login form shortcode. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Affected ProductsAI

Vendor: WordPress. Product: Download Manager (WordPress plugin).

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.