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Participants Database <= 2.7.8.3 — Unauthenticated Arbitrary File Deletion

CVE-2026-59555Published · Updated

Action summary

Affected: ≤2.7.8.3Update to 2.7.8.4 or newer

All remediation steps
Watch plugin
Severity
Critical9.1
CVSS
9.1
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:H Integrity
High
A:H Availability
High
Weakness
CWE-22 Path Traversal
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Participants Database participants-database

  1. Affected≤ 2.7.8.3
  2. Patched in2.7.8.4

Update to 2.7.8.4 or newer.

You are affected if you run ≤ 2.7.8.3. Version 2.7.8.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Participants Database.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 2.7.8.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Participants Database to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to hhhai.

The Participants Database plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in all versions up to, and including, 2.7.8.3. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php).

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Participants Database

All 18
More vulnerabilities in Participants Database
SeverityVulnerabilityCVEPublished
High7.5Unauthenticated SQL Injection
≤2.7.8.5No patch available
CVE-2026-112860
High8.1Unauthenticated PHP Object Injection
≤2.7.8.5No patch available
CVE-2026-112862
Medium4.3Authenticated (Contributor+) Insecure Direct Object Reference
≤2.7.8.5No patch available
CVE-2026-112861
Critical9.1Unauthenticated Arbitrary File Deletion
≤2.7.8.4Update to 2.7.8.5
CVE-2026-28189
High7.5Unauthenticated SQL Injection
<2.7.8.4Update to 2.7.8.4
CVE-2026-13596

Same weakness (Path Traversal)

All Path Traversal
Other Path Traversal vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity critical, CVSS 9.1

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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