CVE-2025-13859 Cross-site scripting in AffiliateX – Amazon Affiliate Plugin
Authenticated subscribers can inject malicious JavaScript via customization settings, leading to stored XSS execution for site visitors.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-13859?
CVE-2025-13859 is a medium-severity cross-site scripting vulnerability in wpcenter AffiliateX – Amazon Affiliate Plugin, published on 15 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The AffiliateX – Amazon Affiliate Plugin plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_customization_settings AJAX action in versions 1.0.0 to 1.3.9.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to store arbitrary JavaScript that executes whenever an AffiliateX block renders on the site.
Weakness: CWE-862
Which versions are affected by CVE-2025-13859?
How do I fix CVE-2025-13859?
No fix has been published for CVE-2025-13859 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-2025-13859 being exploited?
There is no known exploitation of CVE-2025-13859 in the wild and no public exploit code.
Sources
Also known as GHSA-rr8m-86pp-xxjf.