TI-2026-69325 Aliases CVE-2026-17538 GHSA-gw8m-rqgv-6j3j

Insecure direct object reference in LatePoint WordPress plugin

LOW 23CWE-639Published 2026-10-07 · Updated 2026-10-10

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

The LatePoint plugin for WordPress is affected up to and including version 5.6.9. The process_step_customer() function only checks for a logged-in user and does not verify ownership before merging submitted data into an existing customer (CWE-639). An authenticated attacker with Subscriber access or higher can change the first name, last name, email, phone and notes of arbitrary customers. If contact_merge is set to phone, the attacker can also overwrite a victim's email and take over the account through a password reset.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

The LatePoint - Appointment Booking & Reservation plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.6.9. This is due to the process_step_customer() function using is_user_logged_in() as the sole gate before merging POSTed customer data into an existing LatePoint customer, without any ownership checks. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the personal information (first name, last name, email, phone, notes) of arbitrary LatePoint customers, and, when the contact_merge setting is 'phone', to overwrite the victim's email address and take over the account via a password reset.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00151 4th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
latepoint	Appointment Booking Plugin – LatePoint \| Calendar & Scheduling for WordPress	up to 5.6.9	—	No fix listed	CNA

Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress Vendorlatepoint Affected up to 5.6.9 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for the Appointment Booking Plugin (LatePoint | Calendar & Scheduling for WordPress).

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-07 Threatist record created from CVE-2026-17538
2026-10-08 Alias added: GHSA-gw8m-rqgv-6j3j
2026-10-09 Priority changed: MEDIUM → LOW
2026-10-10 CISA SSVC decision points changed

References

Other 2

TI-2026-86552 Authentication bypass in LatePoint lets attackers take over accounts CVSS 3.1CRITICAL 9.1
TI-2024-08303 LatePoint <= 5.0.12 - Authentication Bypass CVSS 3.1CRITICAL 9.8
TI-2024-08274 LatePoint <= 5.0.11 - Unauthenticated Arbitrary User Password Change via SQL Injection CVSS 3.1CRITICAL 9.8
TI-2026-62628 Appointment Booking Plugin <= 5.7.0 - Unauthenticated Arbitrary Shortcode Execution via First/Last Name Field CVSS 3.1CRITICAL 9.1
TI-2024-02298 LatePoint Plugin <= 4.9.9 - Missing Authorization and Sensitive Information Exposure via IDOR CVSS 3.1CRITICAL 9.1
TI-2026-76047 Race condition in LatePoint plugin allows authentication bypass CVSS 3.1CRITICAL 9.1

See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences