CVE-2026-15761 in Tickera Plugin
Summary
by MITRE • 07/23/2026
The Tickera – Sell Tickets & Manage Events plugin for WordPress is vulnerable to generic SQL Injection via the 'tc_event_filter' parameter in all versions up to, and including, 3.6.0.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with staff-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The vulnerable code path is reachable by users holding the plugin's custom Staff role, as the plugin's add_required_capabilities() function grants that role the edit_tc_tickets_instances capability, providing access to the tc_tickets_instances admin list screen where the filter is applied.
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Analysis
by VulDB Data Team • 07/23/2026
The vulnerability in the Tickera WordPress plugin represents a critical sql injection flaw that undermines database security through improper input validation and sanitization practices. This weakness exists in versions up to and including 3601 where the 'tc_event_filter' parameter fails to implement adequate escaping mechanisms before being incorporated into existing sql queries. The vulnerability stems from insufficient preparation of sql statements, allowing malicious actors to manipulate query execution paths through crafted input that bypasses normal validation controls.
The security implications extend beyond simple data exposure as authenticated attackers with staff-level privileges can exploit this flaw to extract sensitive information from the underlying database system. The attack vector specifically targets users holding the plugin's custom staff role which possesses the edit_tc_tickets_instances capability, granting access to the tc_tickets_instances admin list screen where the vulnerable filter functionality operates. This privilege escalation path demonstrates how internal role-based access controls can be circumvented through well-crafted sql injection payloads that leverage existing legitimate query structures.
From a technical perspective, the vulnerability manifests when user-supplied input from the tc_event_filter parameter is directly incorporated into sql statements without proper sanitization or parameterization. The lack of sufficient escaping creates opportunities for attackers to inject additional sql commands that execute within the context of the existing database queries. This type of vulnerability falls under the common weakness enumeration category of cwe-89 sql injection, which represents one of the most prevalent and dangerous security flaws in web applications.
The operational impact of this vulnerability extends beyond data theft to potentially enable full database compromise through advanced exploitation techniques. Attackers can leverage the sql injection to extract user credentials, event details, ticket information, and other sensitive data that may contain personal identifiable information or business-critical data. The fact that this vulnerability is accessible through a staff role suggests potential for insider threat scenarios where compromised accounts could be used to escalate privileges or access additional system components.
Mitigation strategies should focus on immediate code remediation including proper input validation, parameterized queries, and implementation of prepared statements to prevent sql injection attacks. Security best practices recommend implementing the principle of least privilege by reviewing the edit_tc_tickets_instances capability assignment and ensuring that only users requiring this level of access actually possess it. Additionally, regular security audits of plugin code and database interactions should be conducted to identify similar vulnerabilities that may exist in other components of the wordpress ecosystem, aligning with attack technique patterns documented in the mitre att&ck framework for web application exploitation.
The vulnerability highlights the importance of proper input handling and sql query construction practices within wordpress plugins, particularly those handling user data through administrative interfaces. Organizations should implement comprehensive security testing procedures including dynamic analysis and static code review to identify similar flaws before they can be exploited by malicious actors. Regular plugin updates and monitoring of security advisories remain critical defensive measures against known vulnerabilities that may exist in widely-used wordpress components.