Mass Assignment Vulnerability in MacCMS by MacCMS Pro
CVE-2026-116216

6.9MEDIUM

Key Information:

Vendor

Maccmspro

Status
Maccms10
Vendor
CVE Published:
26 October 2026

What is CVE-2026-116216?

MacCMS versions 10 through 2026.1000.4056 are vulnerable due to a mass assignment issue in the index/Comment::saveData() function. This vulnerability allows unauthenticated attackers to manipulate the mac_comment column, specifically sending a crafted user_id as a parameter. As a result, these attackers can submit anonymous comments that appear to originate from any registered user, effectively displaying their avatars and impersonating them within the application.

Affected Version(s)

maccms10 0 <= 2021.1000.2000

maccms10 0 <= 2026.1000.4056

References

https://github.com/maccmspro/maccms10/issues/30
issue-tracking
https://github.com/maccmspro/maccms10/blob/7f388ee0008faf...
technical-description
https://github.com/maccmspro/maccms10
product

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Abu Raihan Biswas
.