Auth bypass in Maccms
CVE-2026-4563
A weakness has been identified in MacCMS up to 2025.1000.4052. This vulnerability affects the function order_info of the file application/index/controller/User.php of the component Member Order Detail Interface. This manipulation of the argument order_id causes authorization bypass. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (29.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Maccms — versions 2025.1000.4052
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/HuajiHD/CVE/issues/10 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-4563?
- CVE-2026-4563 is a medium-severity vulnerability in Maccms, classified under Improper Authorization. CVSS score: 4.3/10. Published 2026-03-23.
- How severe is CVE-2026-4563?
- Medium severity. CVSS v3 base score is 4.3 out of 10.