Vulnerability · Published Aug 4, 2026 · Assigned by VulDB

CVE-2026-18720kalcaddle kodbox msgWarning Plugin action improper authorization

Medium 5.3

In plain English

A medium-severity security flaw in kodbox from kalcaddle. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.5%top 58.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
kalcaddle	kodbox	1.67 Build 02

Weakness: CWE-285, CWE-266 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R

References

VDB-385631 | kalcaddle kodbox msgWarning Plugin action improper authorization vdb-entry
VDB-385631 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-18720 | CVE Analysis and Report third-party-advisory
Submit #856156 | kalcaddle / kodcloud kodbox 1.67 build 02 Access Control Check Implemented After Asset is Accessed third-party-advisory
https://github.com/sjmycz/cve/issues/4 exploit, issue-tracking