# CVE-2026-82814: Duplicator and Duplicator Pro PHP Object Injection

Source: https://junglewise.ai/threats/cve-2026-82814-the-duplicator-and-duplicator-pro-plugins-for-wordpress-are  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-82814 · Severity: high · CVSS 8.8 · Published 2026-10-21

Duplicator and Duplicator Pro are WordPress plugins that back up and migrate WordPress sites. These plugins contain a flaw that allows attackers to inject malicious code into the database before a site administrator creates a backup package and performs a migration. In Duplicator Free, this can lead to direct command execution on the server; in Duplicator Pro, an attacker could delete critical files like wp-config.php, exposing the installation setup and enabling site takeover.

Technologies: [Duplicator](https://junglewise.ai/threats/technologies/duplicator), [Duplicator Pro](https://junglewise.ai/threats/technologies/duplicator-pro). Vendors: [Duplicator](https://junglewise.ai/threats/vendors/duplicator).

## Quick answers

**Is CVE-2026-82814 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82814 being exploited in the wild.

**How severe is CVE-2026-82814?** High severity, with a CVSS score of 8.8, published 21 October 2026.

**Which products and versions are affected?** Duplicator up to 1.5.17; Duplicator Pro up to 4.6.10.

**Is there a fix for CVE-2026-82814?** 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-2026-82814 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-82814?** Check whether you run Duplicator or Duplicator Pro 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 a PHP Object Injection flaw in DUPX_UpdateEngine::unserializeTest() that deserializes untrusted database content without validation. An unauthenticated attacker can store a malicious serialized object in public site content before an administrator builds a package and performs a migration. Duplicator Free includes a Requests 1.7 POP chain enabling arbitrary callback execution and OS command execution; Duplicator Pro contains an IndexList destructor gadget that can delete arbitrary files in writable directories.

## Affected products

- Duplicator Duplicator up to 1.5.17
- Duplicator Duplicator Pro up to 4.6.10

## Timeline

- 2026-10-21: disclosed

## References

- [https://duplicator.com/knowledge-base/changelog/](https://duplicator.com/knowledge-base/changelog/)
- [https://plugins.trac.wordpress.org/changeset/3687092/duplicator](https://plugins.trac.wordpress.org/changeset/3687092/duplicator)

## Related threats

- [Duplicator WordPress plugin SQL injection via charset rewrite](https://junglewise.ai/threats/cve-2026-115262-the-duplicator-wordpress-plugin-before-5-1-0-duplicator-pro)
- [Duplicator WordPress plugin reflected XSS via logname parameter](https://junglewise.ai/threats/cve-2026-112243-the-duplicator-wordpress-plugin-before-5-1-0-duplicator-pro)
- [Duplicator WordPress plugin privilege escalation in upgrade routine](https://junglewise.ai/threats/cve-2026-115251-the-duplicator-wordpress-plugin-before-5-0-0-does-not-restrict)