CVE-2026-4065 | nextendweb Smart Slider 3 Plugin up to 3.5.1.33 on WordPress display_admin_ajax authorization

VDB-355954 · CVE-2026-4065 · EUVD-2026-19956 NEXTENDWEB SMART SLIDER 3 PLUGIN UP TO 3.5.1.33 ON WORDPRESS DISPLAY_ADMIN_AJAX AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.8 $0-$5k 1.85 Summaryinfo A vulnerability was found in nextendweb Smart Slider 3 Plugin up to 3.5.1.33 on WordPress and classified as critical. Impacted is the function display_admin_ajax. Executing a manipulation can lead to authorization. The identification of this vulnerability is CVE-2026-4065. The attack may be launched remotely. There is no exploit available. Detailsinfo A vulnerability has been found in nextendweb Smart Slider 3 Plugin up to 3.5.1.33 on WordPress and classified as critical. This vulnerability affects the function display_admin_ajax. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes: 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. The weakness was shared by darkestmode. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-4065 since 03/12/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/08/2026). There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-19956). Productinfo Type WordPress Plugin Vendor nextendweb Name Smart Slider 3 Plugin Version 3.5.1.0 3.5.1.1 3.5.1.2 3.5.1.3 3.5.1.4 3.5.1.5 3.5.1.6 3.5.1.7 3.5.1.8 3.5.1.9 3.5.1.10 3.5.1.11 3.5.1.12 3.5.1.13 3.5.1.14 3.5.1.15 3.5.1.16 3.5.1.17 3.5.1.18 3.5.1.19 3.5.1.20 3.5.1.21 3.5.1.22 3.5.1.23 3.5.1.24 3.5.1.25 3.5.1.26 3.5.1.27 3.5.1.28 3.5.1.29 3.5.1.30 3.5.1.31 3.5.1.32 3.5.1.33 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.9 VulDB Meta Temp Score: 5.8 VulDB Base Score: 6.3 VulDB Temp Score: 6.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.4 CNA Vector (Wordfence): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-862 / CWE-863 / CWE-285 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/12/2026 CVE reserved 04/07/2026 +25 days Advisory disclosed 04/07/2026 +0 days VulDB entry created 04/08/2026 +1 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: darkestmode Status: Not defined CVE: CVE-2026-4065 (🔒) GCVE (CVE): GCVE-0-2026-4065 GCVE (VulDB): GCVE-100-355954 EUVD: 🔒 Entryinfo Created: 04/07/2026 23:34 Updated: 04/08/2026 04:47 Changes: 04/07/2026 23:34 (64), 04/08/2026 04:47 (1) Complete: 🔍 Cache ID: 99:014:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸