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

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.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• colbeinformatik

Name

• Katalogportal-pdf-sync Widget Plugin

Version

• 1.0

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Entryinfo

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