CVE-2026-27406 in My Tickets Plugin
Summary
by MITRE • 03/05/2026
Insertion of Sensitive Information Into Sent Data vulnerability in Joe Dolson My Tickets my-tickets allows Retrieve Embedded Sensitive Data.This issue affects My Tickets: from n/a through <= 2.1.0.
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Analysis
by VulDB Data Team • 03/09/2026
The vulnerability identified as CVE-2026-27406 represents a critical insertion of sensitive information into sent data flaw within the Joe Dolson My Tickets plugin for WordPress. This vulnerability falls under the CWE-200 category of Information Exposure and specifically manifests as a sensitive data leak through embedded information in transmitted data. The issue is present in all versions of the My Tickets plugin up to and including version 2.1.0, indicating a widespread impact across multiple iterations of the software. The vulnerability stems from inadequate sanitization and validation of data before transmission, allowing sensitive information to be inadvertently included in data sent to external systems or users. This type of vulnerability is particularly dangerous in web applications where user data and system information are frequently transmitted between components.
The technical implementation of this vulnerability occurs when the plugin processes user tickets or related data and fails to properly filter or remove sensitive information before sending data to external services or displaying it in transmitted payloads. Attackers can exploit this weakness to retrieve embedded sensitive data that should remain protected, potentially including user credentials, personal information, system identifiers, or other confidential details. The flaw operates at the data transmission layer where the plugin does not adequately validate or sanitize the content being sent, creating an attack surface that allows unauthorized data extraction. This vulnerability is classified under the ATT&CK technique T1567.002 for Exfiltration Over Web Service, as it enables data exfiltration through web-based communication channels. The issue is particularly concerning because it affects the core data handling functionality of the ticketing system, potentially compromising user privacy and system security.
The operational impact of CVE-2026-27406 extends beyond simple data leakage to encompass potential compromise of user privacy, system integrity, and regulatory compliance. Organizations using affected versions of the My Tickets plugin face significant risks including unauthorized access to user information, potential identity theft, and violation of data protection regulations such as GDPR or CCPA. The vulnerability can be exploited by remote attackers without requiring authentication, making it particularly dangerous as it can be leveraged by malicious actors to harvest sensitive information from legitimate users of the platform. System administrators may experience increased security incidents and potential legal consequences due to data exposure. The impact is amplified when considering that ticketing systems often contain personal information, transaction details, and potentially business-critical data that could be valuable to threat actors. Additionally, the vulnerability may enable further attacks such as credential stuffing or social engineering campaigns based on the retrieved sensitive information.
Mitigation strategies for this vulnerability must focus on immediate remediation and long-term security enhancements. The primary recommendation is to upgrade to a patched version of the My Tickets plugin, as this addresses the core sanitization and validation issues that allow sensitive data insertion. System administrators should implement comprehensive data validation routines that filter out sensitive information before data transmission occurs, particularly focusing on user inputs and system-generated data. Network monitoring should be enhanced to detect unusual data transmission patterns that might indicate data leakage events. The implementation of proper input sanitization and output encoding practices should be enforced throughout the application, with particular attention to data handling routines that process ticket information and user data. Security measures should include regular vulnerability assessments and penetration testing to identify similar issues within the application. Organizations should also implement data loss prevention controls and establish monitoring protocols for sensitive data exposure, ensuring that any future vulnerabilities of this nature are detected and addressed promptly. Compliance with security standards such as OWASP Top Ten and NIST cybersecurity frameworks should guide the remediation process to ensure comprehensive protection against similar vulnerabilities.