What is CVE-2026-15516?

CVE-2026-15516 is a medium-severity vulnerability in Maccms Pro, classified under Improper Authorization. CVSS score: 5.6/10. Published 2026-07-13.

How severe is CVE-2026-15516?

Medium severity. CVSS v3 base score is 5.6 out of 10.

Auth bypass in Maccms Pro

CVE-2026-15516

A vulnerability was detected in MacCMS Pro up to 2022.1000.3005. Impacted is the function step5 of the file application/install/controller/Index.php of the component Installation Module. The manipulation results in authorization bypass. The attack may be launched remotely. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit is now public and may be used. Upgrading to version 2022.1000.3025 is recommended to address this issue. Upgrading the affected component is recommended.

EPSS: 0.004 (36.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

N/a Maccms Pro — versions 2022.1000.3005, 2022.1000.3025

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)
cna@vuldb.com (patch)

Frequently asked questions

What is CVE-2026-15516?: CVE-2026-15516 is a medium-severity vulnerability in Maccms Pro, classified under Improper Authorization. CVSS score: 5.6/10. Published 2026-07-13.
How severe is CVE-2026-15516?: Medium severity. CVSS v3 base score is 5.6 out of 10.