CVE-2026-27406: 
WordPress vulnerability analysis and mitigation

CVE-2026-27406 is a Sensitive Data Exposure vulnerability (CWE-201: Insertion of Sensitive Information Into Sent Data) affecting the "My Tickets" WordPress plugin developed by Joe Dolson. The vulnerability allows unauthenticated remote attackers to retrieve embedded sensitive data from affected installations. All versions of the plugin up to and including 2.1.0 are affected. It was published on March 5, 2026, and carries a CVSS v3.1 base score of 7.5 (High) (Feedly, Patchstack).

The root cause is classified as CWE-201 (Insertion of Sensitive Information Into Sent Data), meaning the plugin inadvertently includes sensitive data within responses sent to clients. The attack vector is network-based, requires no authentication, no user interaction, and low attack complexity, making it trivially exploitable by any remote attacker. The vulnerability was discovered and reported by Patchstack, which assigned it EUVD-2026-9644 in the ENISA vulnerability database (Feedly, Patchstack).

Successful exploitation results in a high confidentiality impact, with no effect on integrity or availability. An unauthenticated attacker can retrieve sensitive information embedded in plugin responses, which may include personally identifiable information (PII) related to ticket purchasers or event attendees, potentially exposing customer data stored by the WordPress site. The scope is limited to the affected system, but the exposed data could facilitate further attacks such as phishing or account takeover (Feedly).

No public proof-of-concept exploit code or evidence of in-the-wild exploitation has been reported as of the time of writing. The EPSS score is approximately 0.018% (0.000180), indicating a very low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. No threat actor attribution has been identified (Feedly).

Users should update the My Tickets WordPress plugin to a version beyond 2.1.0, which is the last confirmed vulnerable release. The fix was coordinated and disclosed by Patchstack; site administrators should check the WordPress plugin repository for the latest patched release and apply it immediately. As a temporary measure, consider restricting access to the WordPress site or disabling the plugin until an update can be applied (Patchstack).