---
id: CVE-2026-76931
title: >-
  The Zephyr Project Manager plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via the ‘message’ parameter in all versions up to, and
  including, 3.3.205 due to insufficient input sanitization and output escaping
summary: >-
  The Zephyr Project Manager plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via the ‘message’ parameter in all versions up to, and
  including, 3.3.205 due to insufficient input sanitization and output escaping.
  This makes…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: dylanjkotze
product: Zephyr Project Manager
affected:
  - zephyr_project_manager <= 3.3.205
published: '2026-09-08'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T15:18:46.467'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76931'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/zephyr-project-manager/trunk/includes/Base/AjaxHandler.php#L305
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/zephyr-project-manager/trunk/includes/Core/Projects.php#L1052
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/zephyr-project-manager/trunk/includes/Core/Tasks.php#L1308
    label: security@wordfence.com
  - url: 'https://plugins.trac.wordpress.org/changeset/3656930/'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/888dfcc5-a903-4b2d-846b-c93f0b33b0c7?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T14:47:54.417695Z'
ingestedAt: '2026-09-08T15:33:26.983Z'
epss: 0.00331
epssPercentile: 0.23559
---

## Overview

The Zephyr Project Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘message’ parameter in all versions up to, and including, 3.3.205 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerability can only be exploited when the 'Directly link to project' plugin setting is disabled.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.