Auth bypass in Kalcaddle Kodbox
CVE-2026-4592
A security vulnerability has been detected in kalcaddle kodbox 1.64. This impacts the function loginAfter/tfaVerify of the file /workspace/source-code/plugins/client/controller/tfa/index.class.php of the component Password Login. The manipulation leads to improper authentication. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is said to be difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Broken Authentication
EPSS: 0.003 (28.3th 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
- Kalcaddle Kodbox — versions 1.64
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 (exploit, broken-link)
Frequently asked questions
- What is CVE-2026-4592?
- CVE-2026-4592 is a medium-severity vulnerability in Kalcaddle Kodbox, classified under Improper Authentication. CVSS score: 5.6/10. Published 2026-03-23.
- How severe is CVE-2026-4592?
- Medium severity. CVSS v3 base score is 5.6 out of 10.