# CVE-2026-84898: Eventin WordPress plugin local file inclusion via event layout

Source: https://junglewise.ai/threats/cve-2026-84898-eventin-wordpress-plugin-local-file-inclusion-via-event-layout  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-05. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-84898 · Severity: medium · CVSS 6.6 · Published 2026-09-05

Eventin is a popular WordPress plugin for managing events. A flaw in the plugin allows authenticated users with contributor-level permissions to include and execute arbitrary PHP files on the server by manipulating the event layout parameter. An attacker with a contributor account could exploit this to run malicious code, potentially compromising the website and accessing sensitive data.

## Quick answers

**Is CVE-2026-84898 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84898 being exploited in the wild.

**How severe is CVE-2026-84898?** Medium severity, with a CVSS score of 6.6, published 5 September 2026.

**Which products and versions are affected?** Eventin Eventin before 4.1.21.

**Is there a fix for CVE-2026-84898?** A patch was published on 2026-09-03: Fixed in version 4.1.21 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-84898 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-84898?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The plugin fails to properly validate the event_layout template path parameter before using it in a PHP include statement, resulting in a local file inclusion (LFI) vulnerability. An authenticated attacker with contributor-level access or above can craft a malicious event creation request via the REST API (/wp-json/eventin/v2/events) with a traversal payload in the event_layout field (e.g., "../../../../uploads/YYYY/MM/marker"). When the event page is rendered, the unsanitized path is included and executed as PHP code. Exploitation requires: (1) an active contributor account, (2) a theme with Eventin template-override support, and (3) a target PHP file already present on the server. The vulnerability is fixed in version 4.1.21.

## Affected products

- Eventin Eventin before 4.1.21

## Timeline

- 2026-09-03: disclosed
- 2026-09-03: patched: Fixed in version 4.1.21
- 2026-09-05: advisory

## References

- [https://wpscan.com/vulnerability/d8dea263-5676-4e3c-9ea4-36904e1ac4d3/](https://wpscan.com/vulnerability/d8dea263-5676-4e3c-9ea4-36904e1ac4d3/)