CVE-2026-4065 Missing authorization in Smart Slider 3
Authenticated contributors can read slider metadata and manipulate image records due to missing capability checks in Smart Slider 3.
- 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-2026-4065?
CVE-2026-4065 is a medium-severity missing authorization vulnerability in nextendweb Smart Slider 3, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Smart Slider 3 plugin for WordPress is vulnerable to unauthorized access and modification of data due to missing capability checks on multiple wp_ajax_smart-slider3 controller actions in all versions up to, and including, 3.5.1.33. The display_admin_ajax() method does not call checkForCap() (which requires unfiltered_html capability), and several controller actions only validate the nonce (validateToken()) without calling validatePermission(). This makes it possible for authenticated attackers, with Contributor-level access and above, to enumerate slider metadata and create, modify, and delete image storage records by obtaining the nextend_nonce exposed on post editor pages.
Weakness: CWE-862
Which versions are affected by CVE-2026-4065?
How do I fix CVE-2026-4065?
No fix has been published for CVE-2026-4065 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4065 being exploited?
There is no known exploitation of CVE-2026-4065 in the wild and no public exploit code.
Sources
Also known as GHSA-m7hj-m974-fx49.