Bplugins Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines) vulnerabilities

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Published CVEs affecting Bplugins Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines): 1 record(s), with affected versions and fixes.

CVE-2026-1228 Medium · 4.3 CWE-639 Feb 6, 2026

Timeline Block <= 1.3.3 - Insecure Direct Object Reference to Authenticated (Author+) Private Timeline Exposure via Shortcode Attribute

The Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines) plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.3.3 via the tlgb_shortcode() function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Author-level access and above, to disclose private timeline content via the id attribute supplied to the 'timeline_block' shortcode.