RCE in Kalcaddle Kodbox
CVE-2026-4591
A weakness has been identified in kalcaddle kodbox 1.64. This affects the function checkBin of the file /workspace/source-code/plugins/fileThumb/app.php of the component fileThumb Endpoint. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.034 (88.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/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-2026-4591?
- CVE-2026-4591 is a medium-severity vulnerability in Kalcaddle Kodbox, classified under Command Injection. CVSS score: 4.7/10. Published 2026-03-23.
- How severe is CVE-2026-4591?
- Medium severity. CVSS v3 base score is 4.7 out of 10.