CVE-2026-4065: CWE-862 Missing Authorization in nextendweb Smart Slider 3
CVE-2026-4065 is a medium severity vulnerability in the Smart Slider 3 WordPress plugin (up to version 3. 5. 1. 33) caused by missing authorization checks on multiple AJAX controller actions. Authenticated users with Contributor-level access or higher can exploit this flaw to enumerate slider metadata and create, modify, or delete image storage records by leveraging a nonce exposed on post editor pages. The vulnerability arises because the display_admin_ajax() method does not enforce capability checks, and some controller actions only validate nonces without verifying user permissions.
AI Analysis
Technical Summary
The Smart Slider 3 plugin for WordPress suffers from missing authorization (CWE-862) in multiple wp_ajax_smart-slider3 controller actions across all versions up to 3.5.1.33. Specifically, the display_admin_ajax() method fails to call checkForCap(), which requires the unfiltered_html capability, and several controller actions validate only the nonce (validateToken()) without checking user permissions (validatePermission()). This allows authenticated users with Contributor-level privileges or higher to enumerate slider metadata and manipulate image storage records by exploiting the nextend_nonce exposed on post editor pages. The CVSS 3.1 base score is 5.4 (medium severity) with network attack vector, low attack complexity, and requiring privileges with no user interaction.
Potential Impact
An attacker with Contributor-level or higher authenticated access to a WordPress site using the vulnerable Smart Slider 3 plugin can enumerate slider metadata and create, modify, or delete image storage records. This could lead to unauthorized data modification within the plugin's scope but does not directly impact system availability or cause privilege escalation beyond the attacker's existing access level.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or vendor advisory is provided in the available data. Users should monitor the vendor's official channels for updates and apply patches once available. Until then, restrict Contributor-level access to trusted users and consider disabling or limiting use of the Smart Slider 3 plugin if possible.
CVE-2026-4065: CWE-862 Missing Authorization in nextendweb Smart Slider 3
Description
CVE-2026-4065 is a medium severity vulnerability in the Smart Slider 3 WordPress plugin (up to version 3. 5. 1. 33) caused by missing authorization checks on multiple AJAX controller actions. Authenticated users with Contributor-level access or higher can exploit this flaw to enumerate slider metadata and create, modify, or delete image storage records by leveraging a nonce exposed on post editor pages. The vulnerability arises because the display_admin_ajax() method does not enforce capability checks, and some controller actions only validate nonces without verifying user permissions.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Smart Slider 3 plugin for WordPress suffers from missing authorization (CWE-862) in multiple wp_ajax_smart-slider3 controller actions across all versions up to 3.5.1.33. Specifically, the display_admin_ajax() method fails to call checkForCap(), which requires the unfiltered_html capability, and several controller actions validate only the nonce (validateToken()) without checking user permissions (validatePermission()). This allows authenticated users with Contributor-level privileges or higher to enumerate slider metadata and manipulate image storage records by exploiting the nextend_nonce exposed on post editor pages. The CVSS 3.1 base score is 5.4 (medium severity) with network attack vector, low attack complexity, and requiring privileges with no user interaction.
Potential Impact
An attacker with Contributor-level or higher authenticated access to a WordPress site using the vulnerable Smart Slider 3 plugin can enumerate slider metadata and create, modify, or delete image storage records. This could lead to unauthorized data modification within the plugin's scope but does not directly impact system availability or cause privilege escalation beyond the attacker's existing access level.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or vendor advisory is provided in the available data. Users should monitor the vendor's official channels for updates and apply patches once available. Until then, restrict Contributor-level access to trusted users and consider disabling or limiting use of the Smart Slider 3 plugin if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-03-12T17:41:32.556Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5779eaaed68159a6ad78a
Added to database: 4/7/2026, 9:31:10 PM
Last enriched: 4/15/2026, 3:12:38 PM
Last updated: 5/22/2026, 8:43:07 PM
Views: 57
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