CVE-2026-11354
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk15th percentile - higher than 15% of all known CVEs
Summary
The Participants Database plugin for WordPress up to version 2.7.8.3 is vulnerable to Sensitive Information Exposure via the 'id' parameter. An unauthenticated attacker can overwrite any participant record and hijack the private access link, gaining full read and edit access to personal data.
Risk Assessment
An attacker can access participants' personal data such as names, email addresses, phone numbers, compromising privacy and potentially leading to identity theft.
Recommendation
Immediately update the plugin to the latest version containing the fix.
Other vulnerabilities in Participants Database
See all- CVE-2026-27423Medium
The Participants Database plugin for WordPress versions 2.7.8.4 and earlier contains a broken access control vulnerability exploitable by a Subscriber-level user.
- CVE-2026-13596Critical
The Participants Database WordPress plugin before version 2.7.8.4 does not properly sanitize and escape a user-supplied parameter before using it in a SQL query. This allows unauthenticated attackers to perform SQL injection attacks.
- CVE-2026-59555Critical
The Participants Database plugin versions up to 2.7.8.3 allow unauthenticated arbitrary file deletion.
- CVE-2026-59525Critical
The Participants Database plugin versions up to 2.7.8.3 contain an unauthenticated SQL injection vulnerability. An attacker can send crafted requests to execute arbitrary SQL queries.
- CVE-2026-28189High
The Participants Database plugin versions up to 2.7.8.4 allow unauthenticated users to delete arbitrary files from the server.
Original NVD description (English source)
The Participants Database plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.7.8.3 via the 'id' parameter. This makes it possible for unauthenticated attackers to overwrite arbitrary participant records by numeric ID and redirect the private_id-bearing record-access link to an attacker-controlled email address, granting full read and edit access to the victim's stored personally identifiable information including names, email addresses, phone numbers, and any other fields collected in the participant database. An attacker can harvest a valid nonce with a plain unauthenticated GET request to any page rendering the public signup or record form, then POST action=update with an arbitrary id value to overwrite any record; chaining a subsequent action=retrieve then delivers the private-access link to the attacker-controlled mailbox.