CVE-2026-1666 Download Manager <= 3.3.46 - Reflected Cross-Site Scripting via 'redirect_to' Parameter
Unauthenticated attackers can inject arbitrary web scripts via the redirect_to parameter in the Download Manager plugin, requiring user interaction to execute.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-1666?
CVE-2026-1666 is a medium-severity cross-site scripting vulnerability in codename065 Download Manager, published on 18 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-1666?
How do I fix CVE-2026-1666?
No fix has been published for CVE-2026-1666 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-1666 being exploited?
There is no known exploitation of CVE-2026-1666 in the wild and no public exploit code.
Sources
Also known as GHSA-5c5v-f747-q7rq.