What is CVE-2026-18720?

CVE-2026-18720 is a medium-severity vulnerability in Kalcaddle Kodbox, classified under Incorrect Privilege Assignment. CVSS score: 5.3/10. Published 2026-08-04.

How severe is CVE-2026-18720?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Kalcaddle Kodbox

CVE-2026-18720

A flaw has been found in kalcaddle kodbox 1.67 Build 02. This vulnerability affects unknown code of the file /index.php?plugin/msgWarning/action of the component msgWarning Plugin. Executing a manipulation can lead to improper authorization. It is possible to launch the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

EPSS: 0.003 (21.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Kalcaddle Kodbox — versions 1.67 Build 02

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2026-18720?: CVE-2026-18720 is a medium-severity vulnerability in Kalcaddle Kodbox, classified under Incorrect Privilege Assignment. CVSS score: 5.3/10. Published 2026-08-04.
How severe is CVE-2026-18720?: Medium severity. CVSS v3 base score is 5.3 out of 10.