Vulnerability · Published Feb 6, 2026 · Assigned by Wordfence
CVE-2026-1228Timeline Block <= 1.3.3 - Insecure Direct Object Reference to Authenticated (Author+) Private Timeline Exposure via Shortcode Attribute
Medium 4.3
In plain English
A medium-severity authorization bypass via user-controlled key in Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines) from bplugins. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| bplugins | Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines) | 0 – through 1.3.3 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N