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CVE-2026-1228— Timeline Block <= 1.3.3 - Insecure Direct Object Reference to Authenticated (Author+) Private Timeline Exposure via Shortcode Attribute

Quick assessment

Affected
bplugins Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Timeline Block 1.3.3及之前版本存在安全漏洞，该漏洞源于tlgb_shortcode函数对用户控制的键缺少验证，可能导致经过身份验证的攻击者通过timeline_block短代码的id属性泄露私有时

CVSS 4.3 · Medium EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-1228

Vulnerability Information
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Vulnerability Title
Timeline Block <= 1.3.3 - Insecure Direct Object Reference to Authenticated (Author+) Private Timeline Exposure via Shortcode Attribute
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Timeline Block 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Timeline Block 1.3.3及之前版本存在安全漏洞，该漏洞源于tlgb_shortcode函数对用户控制的键缺少验证，可能导致经过身份验证的攻击者通过timeline_block短代码的id属性泄露私有时
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
bplugins Timeline Block – Beautiful Timeline Builder for WordPress (Vertical & Horizontal Timelines) * ~ 1.3.3 -

II. Public POCs for CVE-2026-1228

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III. Intelligence Information for CVE-2026-1228

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IV. Related Vulnerabilities

Same vendor: bplugins
Same weakness: CWE-639

V. Comments for CVE-2026-1228

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