# CVE-2026-112861: xnau webdesign Participants Database access control bypass

Source: https://junglewise.ai/threats/cve-2026-112861-authorization-bypass-through-user-controlled-key-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-112861 · Severity: medium · CVSS 6.3 · Published 2026-10-20

Participants Database is a WordPress plugin used to manage participant records and databases on websites. The plugin contains an insecure direct object reference (IDOR) vulnerability that allows attackers to view other participants' data by changing IDs in URLs, exposing sensitive personal information without authorization.

Technologies: [Xnau Webdesign Participants Database](https://junglewise.ai/threats/technologies/participants-database). Vendors: [Xnau Webdesign](https://junglewise.ai/threats/vendors/xnau-webdesign).

## Quick answers

**Is CVE-2026-112861 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-112861 being exploited in the wild.

**How severe is CVE-2026-112861?** Medium severity, with a CVSS score of 6.3, published 20 October 2026.

**Which products and versions are affected?** Xnau Webdesign Participants Database through 2.7.8.5.

**Is there a fix for CVE-2026-112861?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-112861 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-112861?** Check whether you run Xnau Webdesign Participants Database at an affected version. 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 vulnerability is an insecure direct object reference (IDOR) in the Participants Database WordPress plugin where insufficient access control checks allow attackers to modify object references (such as participant IDs) in requests to access data belonging to other users. This requires at least contributor-level privilege to the WordPress site. The attack succeeds because the plugin does not properly validate whether the requesting user has authorization to access the specific participant records being requested.

## Affected products

- xnau webdesign Participants Database through 2.7.8.5

## Timeline

- 2026-08-31: disclosed: Reported by Tarcísio Luchesi (Poystick)
- 2026-10-20: advisory: Published by Patchstack

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/participants-database/vulnerability/wordpress-participants-database-plugin-2-7-8-5-insecure-direct-object-references-idor-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/participants-database/vulnerability/wordpress-participants-database-plugin-2-7-8-5-insecure-direct-object-references-idor-vulnerability?_s_id=cve)

## Related threats

- [xnau webdesign Participants Database PHP object injection](https://junglewise.ai/threats/cve-2026-112862-deserialization-of-untrusted-data-vulnerability-in-xnau)
- [xnau webdesign Participants Database SQL injection](https://junglewise.ai/threats/cve-2026-112860-improper-neutralization-of-special-elements-used-in-an-sql)
- [Roland Barker Participants Database arbitrary file deletion](https://junglewise.ai/threats/cve-2026-59555-roland-barker-participants-database-arbitrary-file-deletion)
- [Roland Barker Participants Database SQL injection](https://junglewise.ai/threats/cve-2026-59525-roland-barker-participants-database-sql-injection)
- [Roland Barker Participants Database broken access control](https://junglewise.ai/threats/cve-2026-27423-roland-barker-participants-database-broken-access-control)