---
id: CVE-2026-116216
title: >-
  MacCMS v10 through 2026.1000.4056 Comment Impersonation via user_id Mass
  Assignment
summary: >-
  MacCMS v10 through 2026.1000.4056 contains a mass assignment vulnerability in
  index/Comment::saveData() that allows unauthenticated attackers to set
  arbitrary mac_comment columns including user_id. Attackers can submit
  anonymous comments…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-915
vendor: maccmspro
product: maccms10
affected:
  - maccms10 <= 2021.1000.2000
  - maccms10 <= 2026.1000.4056
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T13:08:48.563Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116216'
references:
  - url: 'https://github.com/maccmspro/maccms10/issues/30'
    label: 'GitHub Issue #30'
  - url: >-
      https://github.com/maccmspro/maccms10/blob/7f388ee0008faf5b01e5df7bf5e5a6ff4bbe13e8/application/index/controller/Comment.php#L37-L95
  - url: 'https://github.com/maccmspro/maccms10'
  - url: >-
      https://www.vulncheck.com/advisories/maccms-v10-through-2026.1000.4056-comment-impersonation-via-user-id-mass-assignment
    label: >-
      VulnCheck Advisory: MacCMS v10 through 2026.1000.4056 Comment
      Impersonation via user_id Mass Assignment
tags:
  - cve.org
ingestedAt: '2026-10-26T14:27:31.830Z'
---

## Overview

MacCMS v10 through 2026.1000.4056 contains a mass assignment vulnerability in index/Comment::saveData() that allows unauthenticated attackers to set arbitrary mac_comment columns including user_id. Attackers can submit anonymous comments with a crafted user_id parameter to attribute them to any registered member, displaying that member's avatar and impersonating them.

## Affected

- `maccms10 <= 2021.1000.2000`
- `maccms10 <= 2026.1000.4056`

## Remediation

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