---
id: CVE-2026-77807
title: >-
  AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution
  for WordPress <= 11.0.4 - Unauthenticated Arbitrary File Read via 'user[name]'
  Parameter
summary: >-
  The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation
  Solution for WordPress plugin for WordPress is vulnerable to Directory
  Traversal in all versions up to, and including, 11.0.4 via the `user[name]`
  Parameter. This ma…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-22
vendor: acyba
product: >-
  AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution
  for WordPress
affected:
  - >-
    acymailing_an_ultimate_newsletter_plugin_and_marketing_automation_solution_for_wordpress
    <= 11.0.4
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T16:34:26.590519Z'
published: '2026-09-10'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T20:31:01.134Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-77807'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/19a9b952-84db-4911-bb50-52d74ec01cb8?source=cve
  - url: 'https://plugins.trac.wordpress.org/changeset/3679457/'
tags:
  - cve.org
epss: 0.00928
epssPercentile: 0.58835
ingestedAt: '2026-09-14T11:11:19.881Z'
---

## Overview

The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 11.0.4 via the `user[name]` Parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Exploitation requires "Embed images" option in AcyMailing configuration being enabled.

## Affected

- `acymailing_an_ultimate_newsletter_plugin_and_marketing_automation_solution_for_wordpress <= 11.0.4`

## Remediation

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