---
title: "CVE-2026-109218: WordPress Contact Manager - Unrestricted File Upload"
description: "WordPress Contact Manager plugin <= 9.1.2 contains an arbitrary file upload vulnerability caused by an incomplete extension blacklist in add_message function, letting unauthenticated attackers upload executable files, exploit requires Apache with libapache2-mod-php and timely file retrieval."
url: https://panop.io/threat-heartbeat/CVE-2026-109218/
---

# CVE-2026-109218 WordPress Contact Manager - Unrestricted File Upload

WordPress Contact Manager plugin <= 9.1.2 contains an arbitrary file upload vulnerability caused by an incomplete extension blacklist in add\_message function, letting unauthenticated attackers upload executable files, exploit requires Apache with libapache2-mod-php and timely file retrieval.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

EPSS

0.64% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-109218)

## Details

Type

Unrestricted File Upload

Impact

Remote Code Execution, Unrestricted File Upload

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

28 October 2026

Updated

29 October 2026

Weakness

[CWE-434](https://cwe.mitre.org/data/definitions/434.html)

## Vendor fix

Update to the latest version of Contact Manager plugin.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-109218](https://nvd.nist.gov/vuln/detail/CVE-2026-109218)
- [https://plugins.trac.wordpress.org/browser/contact-manager/tags/9.1.2/contact-manager.php#L42](https://plugins.trac.wordpress.org/browser/contact-manager/tags/9.1.2/contact-manager.php#L42)
- [https://plugins.trac.wordpress.org/browser/contact-manager/tags/9.1.2/includes/add-message.php#L254](https://plugins.trac.wordpress.org/browser/contact-manager/tags/9.1.2/includes/add-message.php#L254)
- [https://plugins.trac.wordpress.org/browser/contact-manager/tags/9.1.2/includes/add-message.php#L256](https://plugins.trac.wordpress.org/browser/contact-manager/tags/9.1.2/includes/add-message.php#L256)
- [https://plugins.trac.wordpress.org/browser/contact-manager/tags/9.1.2/includes/forms/processing.php#L102](https://plugins.trac.wordpress.org/browser/contact-manager/tags/9.1.2/includes/forms/processing.php#L102)
- [https://plugins.trac.wordpress.org/changeset?reponame=&new=3767815%40contact-manager%2Ftags%2F9.1.3&old=3661172%40contact-manager%2Ftags%2F9.1.2](https://plugins.trac.wordpress.org/changeset?reponame=&new=3767815%40contact-manager%2Ftags%2F9.1.3&old=3661172%40contact-manager%2Ftags%2F9.1.2)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/b359ef59-4c2e-4d4e-b000-1845525131de?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/b359ef59-4c2e-4d4e-b000-1845525131de?source=cve)
- [https://fr.wordpress.org/plugins/contact-manager/](https://fr.wordpress.org/plugins/contact-manager/)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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