What is CVE-2026-116216?

CVE-2026-116216 is a medium-severity vulnerability in Magicblack Maccms10, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 5.3/10. Published 2026-10-26.

How severe is CVE-2026-116216?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Magicblack Maccms10

CVE-2026-116216

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.

Vulnerability class: Mass Assignment

Published 2026-10-26 · last modified 2026-10-26.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Magicblack Maccms10

Weakness classification (CWE)

CWE-915 — Improperly Controlled Modification of Dynamically-Determined Object Attributes

References

github.com/maccmspro/maccms10/issues/30 (issue-tracking)
github.com/maccmspro/maccms10/blob/7f388ee0008faf5b01e5df7bf5e5a6ff4bbe13e8/app… (technical-description)
github.com/maccmspro/maccms10 (product)
www.vulncheck.com/advisories/maccms-v10-through-2026.1000.4056-comment-imperson… (third-party-advisory)

Frequently asked questions

What is CVE-2026-116216?: CVE-2026-116216 is a medium-severity vulnerability in Magicblack Maccms10, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 5.3/10. Published 2026-10-26.
How severe is CVE-2026-116216?: Medium severity. CVSS v3 base score is 5.3 out of 10.