CVE-2026-1228
Timeline Block <= 1.3.3 - Insecure Direct Object Reference to Authenticated (Author+) Private Timeline Exposure via Shortcode Attribute
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | bplugins |
| Product | timeline block – beautiful timeline builder for wordpress (vertical & horizontal timelines) |
| Published | Feb 6, 2026 |
| Last Updated | Apr 8, 2026 |
Stay Ahead of the Next One
Get instant alerts for bplugins timeline block – beautiful timeline builder for wordpress (vertical & horizontal timelines)
Be the first to know when new medium vulnerabilities affecting bplugins timeline block – beautiful timeline builder for wordpress (vertical & horizontal timelines) are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
bplugins / Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines)
0 ≤ 1.3.3
References
Credits
Kazuma Matsumoto