CVE-2025-11517CWE-639

CVE-2025-11517

High · published October 18, 2025

CVSS v3.1
7.5
EPSS
0%
Percentile
33.6
In the wild
Unconfirmed
What it is

⚡ Unauthenticated users can snag paid tickets for free! The Event Tickets and Registration plugin for WordPress has a sneaky endpoint that lets them bypass payment entirely. 🔥 Think of it like a concert where the ticketing system doesn't check if someone actually paid at the door — anyone could just waltz in and enjoy the show without spending a dime! This could lead to a significant revenue loss for organizers, as attackers exploit the flaw to grab access to paid events while leaving event hosts empty-handed. Worse, it could encourage malicious actors to target multiple events, amplifying the financial impact.

Put simply

Think of it like a concert where the ticketing system doesn't check if someone actually paid at the door — anyone could just waltz in and enjoy the show without spending a dime! The vulnerability lies in the /wp-json/tribe/tickets/v1/commerce/free/order endpoint not properly verifying whether a ticket should be free, allowing unauthorized access to paid ticket types directly.

What to do

This could lead to a significant revenue loss for organizers, as attackers exploit the flaw to grab access to paid events while leaving event hosts empty-handed. Worse, it could encourage malicious actors to target multiple events, amplifying the financial impact. Update the Event Tickets and Registration plugin to version 5.26.6 or later to close this loophole. Additionally, review your ticket settings and permissions to ensure proper validation is enforced for all ticket types. 🛡️ You've got this! Follow these steps to secure your ticketing system and keep those profits intact! 🎉

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00405 · 33.6th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2025-10-18T11:15Z
References (2)
EPSS history
Timeline
  • 18 OCT 06:42Z
    Event Tickets and Registration <= 5.26.5 - Unauthenticated Ticket Payment Bypass
    cvelistv5