What is CVE-2026-4562?

CVE-2026-4562 is a high-severity vulnerability in Maccms, classified under Improper Authentication. CVSS score: 7.3/10. Published 2026-03-23.

How severe is CVE-2026-4562?

High severity. CVSS v3 base score is 7.3 out of 10.

Auth bypass in Maccms

CVE-2026-4562

A security flaw has been discovered in MacCMS 2025.1000.4052. This affects an unknown part of the file application/api/controller/Timming.php of the component Timming API Endpoint. The manipulation results in missing authentication. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks.

Vulnerability class: Broken Authentication

EPSS: 0.005 (41.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

N/a Maccms — versions 2025.1000.4052

Weakness classification (CWE)

References

cna@vuldb.com (vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking, exploit)

Frequently asked questions

What is CVE-2026-4562?: CVE-2026-4562 is a high-severity vulnerability in Maccms, classified under Improper Authentication. CVSS score: 7.3/10. Published 2026-03-23.
How severe is CVE-2026-4562?: High severity. CVSS v3 base score is 7.3 out of 10.