# CVE-2026-82814: Duplicator <= 1.5.17 and Duplicator Pro <= 4.6.10 - Unauthenticated PHP Object Injection


- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 21 Oct 2026
- **Updated:** 22 Oct 2026
- **Also known as:** CVE-2026-82823, GHSA-pq4f-mjh8-pjp9

## What is CVE-2026-82814?

CVE-2026-82814 is a high-severity vulnerability in Duplicator Pro, published on 21 Oct 2026. 

### Official description

The Duplicator and Duplicator Pro plugins for WordPress are vulnerable to PHP Object Injection in all versions up to, and including, 1.5.17 and 4.6.10, respectively, via deserialization of untrusted database content in DUPX_UpdateEngine::unserializeTest() during migration. This allows unauthenticated attackers to store a serialized object in public site content before an administrator builds a package and later performs a migration or import that runs database search-and-replace. Duplicator Free bundles a Requests 1.7 POP chain that permits attacker-selected callbacks, resulting in direct operating-system command execution. Duplicator Pro bundles an IndexList destructor gadget that permits deletion of an attacker-selected existing file when its containing directory is writable by the installer PHP process; deletion of wp-config.php can expose the setup wizard and lead to site takeover and code execution if the attacker reaches it first and supplies a reachable database they control. The package must be created after the carrier is stored, and a later administrator migration action is required.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2026-82814?


## How do I fix CVE-2026-82814?

No fix has been published for CVE-2026-82814 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-82814 being exploited?

There is no known exploitation of CVE-2026-82814 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82814 and fix it if it is affected.

What it is: CVE-2026-82814 is a high-severity vulnerability in Duplicator Pro, published on 21 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-82814 in the wild and no public exploit code.

Affected product: Duplicator Pro. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-82814/ (Markdown: https://insights.sbomify.com/CVE-2026-82814/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82814
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82814
- OSV: https://osv.dev/vulnerability/CVE-2026-82814

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-82814/
Summaries are generated and may contain mistakes; the official description above is the record.