Login Request a demo
High severity · published Oct 18, 2025
CVE-2025-11517
Event Tickets and Registration <= 5.26.5 - Unauthenticated Ticket Payment Bypass
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ET
Event Tickets and Registration · stellarwp
through 5.26.5 · source: vendor
Affected product
ET
Event Tickets and Registration
stellarwp
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-11517
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-11517
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3378214/event-tickets/tags/5.26.6/src/Tickets/Commerce/Gateways/Free/REST/Order_Endpoint.php
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/21cd8cb8-2a29-4b66-ab7a-8d8b2f85e2e0?source=cve
More from Event Tickets and Registration
7.5
CVE-2026-3174
Event Tickets and Registration <= 5.27.4 - Missing Authorization to Unauthenticated Stripe Credentials Update
6.5
CVE-2026-97634
Event Tickets and Registration <= 5.29.5 - Authenticated (Contributor+) SQL Injection via 'orderby' Parameter
5.3
CVE-2025-1402
Event Tickets and Registration <= 5.19.1.1 - Missing Authorization to Ticket Deletion
5.3
CVE-2024-13457
Event Tickets <= 5.18.1 - Insecure Direct Object Reference to Sensitive Information Exposure
4.3
CVE-2024-2261
Event Tickets and Registration <= 5.8.2 - Improper Authorization to Information Disclosure