Improper Access Control in User Registration Endpoint

A weakness has been identified in SourceCodester Inventory Management System 1.0. This vulnerability affects unknown code of the file /api/users_handler.php of the component User Registration Endpoint. This manipulation of the argument role causes improper access controls. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.

Casky was already ahead

This CVE exploits attack patterns that Casky's 224matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

CVE-2026-13568 represents a critical access control vulnerability in SourceCodester Inventory Management System 1.0, where an unauthenticated attacker can manipulate the 'role' parameter in the /api/users_handler.php endpoint to escalate privileges during user registration. By modifying this argument, attackers can register accounts with administrative or elevated permissions that should be restricted to authorized administrators only. This vulnerability is particularly dangerous because it requires no authentication and can be exploited remotely, making it a direct path to unauthorized system access. Organizations running Inventory Management System 1.0 face immediate risk of account takeover, data manipulation, and complete system compromise, affecting small to medium-sized businesses relying on this platform for critical inventory operations.

Casky.ai's extended reasoning capabilities across 224 mapped security skills will detect the attack patterns behind this vulnerability by analyzing MITRE ATT&CK technique TA0004 (Privilege Escalation) indicators within user registration traffic. Practitioners using Casky will observe findings related to CWE-266 and CWE-284 violations, identifying suspicious role parameter manipulation attempts in API requests to /api/users_handler.php. The platform's Claude-powered analysis will flag anomalous account creation patterns—particularly new users with elevated role assignments that deviate from normal registration workflows—correlating these with privilege escalation techniques. Security teams will see contextual alerts highlighting unvalidated role parameters, missing server-side authorization checks, and the absence of role-based access control (RBAC) enforcement, enabling rapid detection and remediation before unauthorized administrative accounts become operational threats.

Live Threat IntelligenceComing soon

Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

224 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-13568.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004

Investigate the attack patterns behind CVE-2026-13568

Casky has 224 skills that investigate the attack patterns behind CVE-2026-13568. Run one and get CVSS-scored findings in 3 minutes.

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