CVE-2026-5391— LatePoint <= 5.3.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Possible ATT&CK Techniques 1AI
T1059.007 · JavaScriptAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| latepoint | Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress | ≤ 5.3.2 | affected |
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I. Basic Information for CVE-2026-5391
Vulnerability Information
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Vulnerability Title
LatePoint <= 5.3.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Source: CVE Program / CVE List V5
Vulnerability Description
The LatePoint plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'btn_wrapper_classes' attribute of the 'latepoint_resources' shortcode in all versions up to, and including, 5.3.2. This is due to insufficient input sanitization and output escaping in the 'locations' branch of the 'shortcode_latepoint_resources' function. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress LatePoint 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress LatePoint是WordPress基金会开源的一个在线预约系统插件。 WordPress LatePoint 5.3.2及之前版本存在跨站脚本漏洞，该漏洞源于shortcode_latepoint_resources函数中locations分支的输入清理和输出转义不足，可能导致具有贡献者级别及以上权限的认证攻击者在页面中注入任意Web脚本，当用户访问被注入页面时执行。
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 |
|---|---|---|---|---|
| latepoint | Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress | 0 ~ 5.3.2 | - |
II. Public POCs for CVE-2026-5391
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Patches & Fixes for CVE-2026-5391 (1)
Vendor Advisories for CVE-2026-5391 (1)
IV. Related Vulnerabilities
Same vendor: latepoint
- CVE-2026-57714
WordPress LatePoint plugin <= 5.6.3 - SQL Injection vulnerab - CVE-2026-5356
LatePoint - Calendar Booking Plugin for Appointments and Eve - CVE-2026-11398
LatePoint <= 5.6.1 - Missing Authorization to Unauthenticate - CVE-2026-12657
LatePoint <= 5.6.2 - Unauthenticated Insecure Direct Object - CVE-2026-13228
LatePoint <= 5.6.3 - Authenticated (Custom+) Privilege Escal
Same weakness: CWE-79
- CVE-2026-13424
Online Scheduling and Appointment Booking System <= 27.7 - U - CVE-2026-2357
Bold Page Builder <= 5.6.8 - Authenticated (Contributor+) St - CVE-2026-10734
Infility Global <= 2.15.21 - Unauthenticated Stored Cross-Si - CVE-2026-16775
Smash Balloon Social Post Feed <= 4.9.0 - Authenticated (Con - CVE-2026-16758
Snippet Shortcodes <= 5.2.0 - Authenticated (Contributor+) S
V. Comments for CVE-2026-5391
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