CVE-2026-15667

Eventin <= 4.1.22 - Authenticated (Contirbutor+) Local File Inclusion via 'event_layout' Parameter

2026-09-08 13:49
Wordfence PRISM

Strategic Overview

Status
Patched in 4.1.23
Affected Plugin
Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
Affected Version
<= 4.1.22
CVSS
7.5High
Weakness type
CWE-98 · Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
CVE
CVE-2026-15667
View all Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce vulnerabilities

At a glance

CVE-2026-15667 is a high-severity Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in the Eventin WordPress plugin, affecting versions <= 4.1.22. It carries a CVSS score of 7.5 (reachable over the network; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Contirbutor level or above. The issue is fixed in version 4.1.23; sites on affected versions should update now. Disclosed September 2026, reported by Wordfence PRISM.

Vulnerability Overview

The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 4.1.22 via the 'event_layout' parameter parameter. This makes it possible for authenticated attackers, with contributor-level access and above, to include and execute arbitrary .php files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where .php file types can be uploaded and included. The etn_manage_event capability is assigned to Contributors by default, meaning any Contributor-level user can set the malicious event_layout value via the REST API without any additional configuration.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')

Eventin <= 4.1.22 carries this weakness at event_layout, and reaching it takes an account at Contirbutor level or above. PHP file inclusion means a path used by include or require is built from request data, so the file that gets executed is under the caller's influence.

Including an attacker-influenced file executes its contents, which is why this class is routinely chained with an upload or log-poisoning step to reach code execution. For Eventin the fix is 4.1.23: builds <= 4.1.22 are affected, anything from 4.1.23 onward is not.

Remediation

Update to version 4.1.23, or a newer patched version

How does WordSec protect against this?

An attacker needs Contirbutor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Eventin 4.1.23 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-15667https://www.wordfence.com/threat-intel/vulnerabilities/id/c3001ec4-a1d8-43d7-8e0c-1fe2e4e7f314https://nvd.nist.gov/vuln/detail/CVE-2026-15667

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C