CVE-2026-116216

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 74/100
Published: 2026-10-26 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: None
VI: Low
VA: None

Description

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.

Weakness Classification (1)

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.27%
Raw Score 0.002710
Percentile 19.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00271
2026-10-28
0.00271

Intelligence Sources

mitre ref →
nvd ref →