Key points
- CVE-2026-105889 carries a CVSS score of 9.3, classified as critical severity.
- The vulnerability affects all Tickera Event Ticketing System versions through 3.6.0.6.
- The flaw involves improper neutralization of special elements in SQL commands.
The Tickera Event Ticketing System contains a critical security vulnerability that allows attackers to perform blind SQL injection. The National Vulnerability Database records this issue as CVE-2026-105889 with a CVSS score of 9.3. This high-severity rating indicates that the flaw poses a significant risk to organizations using the plugin for managing event registrations and ticket sales.
In plain English
SQL injection occurs when an application fails to properly filter user input before sending it to a database. In this specific case, the vulnerability is classified as "blind," meaning the attacker cannot directly see the results of their queries in the application’s response. Instead, they infer data by observing changes in the application’s behavior or response times. This technique allows attackers to extract sensitive information from the database without triggering obvious error messages that might alert administrators to the breach.
The background
The National Vulnerability Database describes the weakness as improper neutralization of special elements used in an SQL command. This corresponds to CWE-89, a common weakness enumeration for SQL injection flaws. The issue affects the Tickera Event Ticketing System from its earliest versions through version 3.6.0.6. Because the flaw exists in how the software handles database queries, it could potentially allow attackers to read, modify, or delete data stored within the plugin’s associated database tables.
What changes now
Security teams must immediately verify if their WordPress installations run the Tickera Event Ticketing System. If the installed version is 3.6.0.6 or earlier, the site is affected by CVE-2026-105889. The National Vulnerability Database does not indicate that a patched version has been released yet. Administrators should monitor vendor communications for an official update that addresses this critical SQL injection vulnerability. Until a fix is confirmed, affected sites remain exposed to potential data theft or manipulation.
What to do and how to stay safe: Tickera
- Audit all WordPress installations to identify if the Tickera Event Ticketing System is active and check its version number against the affected range.
- Restrict access to the application’s forms and endpoints using web application firewalls to block malicious SQL payloads.
- Monitor database logs for unusual query patterns or unexpected delays that may indicate blind SQL injection attempts.
- Prepare to apply the vendor’s update immediately once a patched version of the plugin is released and tested.
Step-by-step guide: 7 Configuration Errors That Expose Systems to Zero-Day Exploits
General security guidance from the Vuln Post newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is CVE-2026-105889?
CVE-2026-105889 is a critical blind SQL injection vulnerability in the Tickera Event Ticketing System that allows improper neutralization of SQL commands.
Which versions of Tickera are affected?
All versions of the Tickera Event Ticketing System up to and including version 3.6.0.6 are affected by this vulnerability.
Is there a fix available yet?
No fix has been confirmed yet according to the National Vulnerability Database record for this CVE.
