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CVE-2026-12657— LatePoint <= 5.6.2 - Unauthenticated Insecure Direct Object Reference to Arbitrary Creation via 'service_id' Parameter

Quick assessment

Affected
latepoint LatePoint – Calendar Booking Plugin for Appointments and Events
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.

latepoint LatePoint – Calendar Booking Plugin for Appointments and Events是latepoint个人开发者的日历预订插件。 LatePoint 5.6.2及之前版本存在授权问题漏洞，该漏洞源于对'service_id'参数的用户控制键验证缺失，导致不安全的直接对象引用，可能使未经验证的攻击者创建针对管理员和代理专用服务的已批准预订，消耗受限预约容量并触发未经授权的预订。

CVSS 5.3 · Medium EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1133 · External Remote Services

Affected Version Matrix 1

VendorProduct Version RangeStatus
latepoint LatePoint – Calendar Booking Plugin for Appointments and Events ≤ 5.6.2 affected
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I. Basic Information for CVE-2026-12657

Vulnerability Information
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Vulnerability Title
LatePoint <= 5.6.2 - Unauthenticated Insecure Direct Object Reference to Arbitrary Creation via 'service_id' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The LatePoint – Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.6.2 via the 'service_id' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to create approved bookings against services explicitly restricted to admins and agents, consuming restricted appointment capacity and triggering unauthorized bookings for admin/agent-only services. The bypass works via both the params[booking][service_id] parameter in steps__load_step and the presets[selected_service] parameter in steps__start, both of which are publicly accessible without authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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
LatePoint 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
latepoint LatePoint – Calendar Booking Plugin for Appointments and Events是latepoint个人开发者的日历预订插件。 LatePoint 5.6.2及之前版本存在授权问题漏洞，该漏洞源于对'service_id'参数的用户控制键验证缺失，导致不安全的直接对象引用，可能使未经验证的攻击者创建针对管理员和代理专用服务的已批准预订，消耗受限预约容量并触发未经授权的预订。
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 LatePoint – Calendar Booking Plugin for Appointments and Events 0 ~ 5.6.2 -

II. Public POCs for CVE-2026-12657

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III. Intelligence Information for CVE-2026-12657

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Patches & Fixes for CVE-2026-12657 (2)

Security Blog Posts for CVE-2026-12657 (1)

IV. Related Vulnerabilities

Same product: LatePoint – Calendar Booking Plugin for Appointments and Events
Same vendor: latepoint
Same weakness: CWE-639

V. Comments for CVE-2026-12657

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