CVE-2025-11517

HIGH

WordPress Event Tickets & Registration <5.26.5 - Auth Bypass

Title source: llm

Description

The Event Tickets and Registration plugin for WordPress is vulnerable to payment bypass in all versions up to, and including, 5.26.5. This is due to the /wp-json/tribe/tickets/v1/commerce/free/order endpoint not verifying that a ticket type should be free allowing the user to bypass the payment. This makes it possible for unauthenticated attackers to obtain access to paid tickets, without paying for them, causing a loss of revenue for the target.

References (2)

Core 2

Core References

Product

https://plugins.trac.wordpress.org/changeset/3378214/event-tickets/tags/5.26.6/src/Tickets/Commerce/Gateways/Free/REST/Order_Endpoint.php

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/21cd8cb8-2a29-4b66-ab7a-8d8b2f85e2e0?source=cve

Scores

CVSS v3 7.5

EPSS 0.0015

EPSS Percentile 35.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-639

Status published

Products (2)

stellarwp/Event Tickets and Registration < 5.26.5

theeventscalendar/Event Tickets and Registration < 5.26.5

Published Oct 18, 2025

Tracked Since Feb 18, 2026