CVE-2026-3649 | colbeinformatik Katalogportal-pdf-sync Widget Plugin up to 1.0.0 on WordPress AJAX katalogportal_popup_shortcode katalogportal_userid authorization

VDB-357679 · CVE-2026-3649 · GCVE-0-2026-3649 COLBEINFORMATIK KATALOGPORTAL-PDF-SYNC WIDGET PLUGIN UP TO 1.0.0 ON WORDPRESS AJAX KATALOGPORTAL_POPUP_SHORTCODE KATALOGPORTAL_USERID AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.7 $0-$5k 2.09+ Summaryinfo A vulnerability was found in colbeinformatik Katalogportal-pdf-sync Widget Plugin up to 1.0.0 on WordPress. It has been rated as problematic. This vulnerability affects the function katalogportal_popup_shortcode of the component AJAX Handler. This manipulation of the argument katalogportal_userid causes authorization. The identification of this vulnerability is CVE-2026-3649. It is possible to initiate the attack remotely. There is no exploit available. Detailsinfo A vulnerability classified as problematic was found in colbeinformatik Katalogportal-pdf-sync Widget Plugin up to 1.0.0 on WordPress. Affected by this vulnerability is the function katalogportal_popup_shortcode of the component AJAX Handler. The manipulation of the argument katalogportal_userid 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. The summary by CVE is: The Katalogportal PDF Sync plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 1.0.0. The katalogportal_popup_shortcode() function is registered as an AJAX handler via wp_ajax_katalogportal_shortcodePrinter but lacks any capability check (current_user_can()) or nonce verification. This allows any authenticated user, including Subscribers, to call the endpoint and retrieve a list of all synchronized PDF attachments (including those attached to private or draft posts) along with their titles, actual filenames, and the katalogportal_userid configuration value. The WP_Query uses post_status => 'any' which returns attachments regardless of the parent post's visibility status. The weakness was shared by Phong Nguyen. It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-3649 since 03/06/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/15/2026). There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type WordPress Plugin Vendor colbeinformatik Name Katalogportal-pdf-sync Widget Plugin Version 1.0 CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.8 VulDB Meta Temp Score: 4.7 VulDB Base Score: 4.3 VulDB Temp Score: 4.2 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.3 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 03/06/2026 CVE reserved 04/15/2026 +39 days Advisory disclosed 04/15/2026 +0 days VulDB entry created 04/15/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: Phong Nguyen Status: Not defined CVE: CVE-2026-3649 (🔒) GCVE (CVE): GCVE-0-2026-3649 GCVE (VulDB): GCVE-100-357679 Entryinfo Created: 04/15/2026 11:43 Changes: 04/15/2026 11:43 (66) Complete: 🔍 Cache ID: 99:F06:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸