Insecure Direct Object Reference in Beautiful Timeline Builder for WordPress
CVE-2026-1228

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Timeline Block – Beautiful Timeline Builder For WordPress (vertical & Horizontal Timelines)
Vendor
CVE Published:
6 February 2026

What is CVE-2026-1228?

The Beautiful Timeline Builder plugin for WordPress has a vulnerability that allows authenticated users with Author-level access and higher to exploit the tlgb_shortcode() function. This issue arises from a lack of validation on a key that is user-controlled, potentially enabling these users to access private timeline content by manipulating the id attribute of the 'timeline_block' shortcode. As a result, sensitive information may be disclosed, impacting user privacy.

Affected Version(s)

Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines) 0 <= 1.3.3

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3446078/time...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kazuma Matsumoto
.