CVE-2026-12054 Download Manager <= 3.3.57 - Unauthenticated DOM-Based Reflected Cross-Site Scripting via 'REFERRER' Parameter
Unauthenticated attackers can inject arbitrary web scripts via the REFERRER parameter, executing code in victims' browsers.
- 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-2026-12054?
CVE-2026-12054 is a medium-severity cross-site scripting vulnerability in codename065 Download Manager, published on 10 Oct 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 'REFERRER' parameter in all versions up to, and including, 3.3.57 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.
Weakness: CWE-79
Which versions are affected by CVE-2026-12054?
How do I fix CVE-2026-12054?
No fix has been published for CVE-2026-12054 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-2026-12054 being exploited?
There is no known exploitation of CVE-2026-12054 in the wild and no public exploit code.
Sources
Also known as GHSA-fc9h-r65m-ghj7.