Smart Slider 3 <= 3.5.1.33 - Missing Authorization to Authenticated (Contributor+) Slider Data Read and Image Record Manipulation

5.4
Missing Authorization
CVE CVE-2026-4065
CVSS 5.4 (Medium)
Publicly Published April 7, 2026
Last Updated April 7, 2026
Researcher normaandersonfrank

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.

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Vulnerability Details for Smart Slider 3

Software Type Plugin
Software Slug smart-slider-3 (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.5.1.34, or a newer patched version
Affected Version
  • <= 3.5.1.33
Patched Version
  • 3.5.1.34

Recent vulnerabilities in Smart Slider 3

# Title CVE ID CVSS Researchers Date
1 Smart Slider 3 <= 3.5.1.37 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Exposure via WP_Query Parameter Injection via 'keyword' Parameter CVE-2026-12385 4.3 Yuvraj Tomar July 13, 2026
2 Smart Slider 3 <= 3.5.1.36 - Authenticated (Administrator+) Path Traversal to Arbitrary File Read via 'src'/'srcset' Attribute in HTML Export CVE-2026-9197 4.9 Nguyen Khanh Hao June 5, 2026
3 Smart Slider 3 <= 3.5.1.33 - Authenticated (Subscriber+) Arbitrary File Read via actionExportAll CVE-2026-3098 6.5 Dmitrii Ignatyev March 26, 2026
4 Smart Slider 3 <= 3.5.1.28 - Authenticated (Administrator+) SQL Injection via `sliderid` Parameter CVE-2025-6348 4.9 Chive July 29, 2025
5 Smart Slider 3 <= 3.5.1.22 - Missing Authorization to Limited File Upload CVE-2024-3027 6.4 Christiaan Swiers (YouGina) April 12, 2024
6 Smart Slider 3 <= 3.5.1.13 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2023-0660 6.4 Erwan LR February 28, 2023
7 Smart Slider 3 <= 3.5.1.9 - Authenticated (Contributor+) PHP Object Injection CVE-2022-45845 8.8 Dave Jong November 23, 2022
8 Smart Slider 3 <= 3.5.1.9 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2022-45843 6.4 R3N0 November 23, 2022
9 Smart Slider 3 <= 3.5.1.9 - PHP Object Injection CVE-2022-3357 7.2 Nguyen Duy Quoc Khanh October 10, 2022
10 Smart Slider 3 <= 3.5.0.8 - Authenticated Stored Cross-Site Scripting CVE-2021-24382 5.4 Hardik Solanki, blackangel June 7, 2021

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