Is CVE-2026-3649 actively exploited?

No active exploitation of CVE-2026-3649 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3649 be exploited remotely?

Yes. CVE-2026-3649 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3649?

CVE-2026-3649 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-3649

CWE-862Published: April 15, 2026· Updated: Apr 15, 2026

5.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.0th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-3649 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.