CVE-2026-18720

Deferred Deferred - Pending Action

Improper Authorization in Kalcaddle Kodbox msgWarning Plugin

Publication date: 2026-08-04

Last updated on: 2026-08-12

Assigner: VulDB

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.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-04

Last Modified

2026-08-12

Generated

2026-08-24

AI Q&A

2026-08-04

EPSS Evaluated

2026-08-23

NVD

CVE-2026-18720

EUVD

EUVD-2026-52565

Affected Vendors & Products

Vendor	Product	Version / Range
kalcaddle	kodbox	1.67

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-266	A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
CWE-285	The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

CVE-2026-18720 is an improper authorization flaw in kalcaddle kodbox version 1.67 Build 02. The vulnerability exists in the msgWarning Plugin, specifically in the file /index.php?plugin/msgWarning/action. An attacker can remotely exploit this to gain unauthorized access or perform actions they should not be permitted to do.

Detection Guidance

This vulnerability affects the msgWarning plugin in kalcaddle kodbox 1.67 Build 02 via the /index.php?plugin/msgWarning/action endpoint. To detect it, inspect network traffic for requests targeting this specific path. Check server logs for unusual access to /index.php with plugin/msgWarning parameters. Verify if unauthorized users can access or manipulate the msgWarning functionality.

Impact Analysis

This vulnerability allows remote attackers to bypass authorization checks, potentially accessing sensitive data or performing unauthorized actions in the kodbox application. Since the exploit is publicly available, the risk of exploitation is higher.

Compliance Impact

This vulnerability may lead to improper authorization, potentially allowing unauthorized access to sensitive data. This could impact compliance with GDPR (data protection) and HIPAA (health information privacy) by increasing the risk of unauthorized data exposure or breaches.

Mitigation Strategies

Immediately disable or restrict access to the msgWarning plugin in kalcaddle kodbox 1.67 Build 02. Update to the latest patched version if available. Monitor network traffic for unusual activity targeting /index.php?plugin/msgWarning/action. Since the vendor did not respond, consider isolating affected systems until a fix is confirmed.

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