# CVE-2026-42719: Dynamic User Directory plugin PHP object injection

Source: https://junglewise.ai/threats/cve-2026-42719-subscriber-php-object-injection-in-dynamic-user-directory-2-4  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-10. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-42719 · Severity: critical · CVSS 9.8 · Published 2026-10-10

The Dynamic User Directory WordPress plugin allows subscriber-level users to inject malicious PHP objects that can lead to arbitrary code execution on the web server. This vulnerability enables attackers with low-privilege accounts to gain complete control of WordPress sites and access sensitive data.

Vendors: [Wordpress](https://junglewise.ai/threats/vendors/wordpress).

## Quick answers

**Is CVE-2026-42719 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42719 being exploited in the wild.

**How severe is CVE-2026-42719?** Critical severity, with a CVSS score of 9.8, published 10 October 2026.

**Which products and versions are affected?** Wordpress Dynamic User Directory <=2.4.

**Is there a fix for CVE-2026-42719?** No fixed version is recorded yet. Patchstack has issued a mitigation rule to block attacks until an official patch is available. As an immediate action, disable the plugin or restrict subscriber-level user access until a patched version is released. 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-2026-42719 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-42719?** Check whether you run Wordpress Dynamic User Directory 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.

## How to fix


Patchstack has issued a mitigation rule to block attacks until an official patch is available. As an immediate action, disable the plugin or restrict subscriber-level user access until a patched version is released.

## Technical details

PHP object injection vulnerability in the Dynamic User Directory plugin through version 2.4 allows authenticated subscriber-level users to manipulate how the site processes serialized data, leading to remote code execution. The vulnerability is triggered through user-controlled input that is deserialized without proper validation, exploitable via the network with subscriber authentication.

## Affected products

- WordPress Dynamic User Directory <=2.4

## Timeline

- 2026-10-10: disclosed
- 2026-09-07: other: Vulnerability reported to vendor

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/dynamic-user-directory/vulnerability/wordpress-dynamic-user-directory-plugin-2-4-php-object-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/dynamic-user-directory/vulnerability/wordpress-dynamic-user-directory-plugin-2-4-php-object-injection-vulnerability?_s_id=cve)