CVE-2026-96556: CafeManagement Auth Bypass Vulnerability

CVE-2026-96556 Overview

CVE-2026-96556 is a missing authorization vulnerability in the Neethuharii CafeManagement application. The flaw resides in the addcashier function of AddCashierCode.php, where the application fails to enforce proper access controls on account creation. A remote attacker can manipulate the uname, pass, role, and status parameters to create arbitrary cashier accounts without authentication. Public exploit details have been released, and the vendor did not respond to disclosure attempts.

Critical Impact
Unauthenticated remote attackers can create privileged accounts in CafeManagement, undermining the integrity and confidentiality of the application.

Affected Products

Neethuharii CafeManagement (specific version not disclosed)
Component: AddCashierCode.php
Function: addcashier

Discovery Timeline

2026-09-23 - CVE-2026-96556 published to the National Vulnerability Database (NVD)
2026-09-23 - Last updated in NVD database

Technical Details for CVE-2026-96556

Vulnerability Analysis

The vulnerability is classified as improper authorization under [CWE-266: Incorrect Privilege Assignment]. The addcashier function in AddCashierCode.php processes account-creation requests without validating whether the requester holds administrative privileges. Any remote client can submit a crafted request to add a new cashier account, including elevated role and status values.

Because the flaw affects an account provisioning endpoint, successful exploitation grants persistent access into the application. Attackers can then log in as the newly created cashier or administrator and interact with cafe management data. The exploit has been published publicly, increasing exposure for internet-facing deployments.

Root Cause

The root cause is the absence of authorization checks on a state-changing endpoint. The addcashier handler accepts the uname, pass, role, and status parameters and writes them to the user store without verifying session context or role membership. Any input controlling role is trusted as-is, enabling privilege selection by the caller.

Attack Vector

The attack is executed over the network with no authentication or user interaction required. An attacker sends an HTTP request to AddCashierCode.php with attacker-controlled values for uname, pass, role, and status. The server processes the request and persists the new account. Technical write-up details are available in the GitHub CVE Writeup and the VulDB CVE-2026-96556 entry.

Detection Methods for CVE-2026-96556

Indicators of Compromise

Unexpected HTTP POST requests to AddCashierCode.php from external or non-administrative source addresses.
New cashier or administrator accounts appearing in the application user table without a corresponding administrative session.
Application logs showing account creation events without a preceding authenticated administrator login.

Detection Strategies

Inspect web server access logs for requests to AddCashierCode.php containing the uname, pass, role, and status parameters.
Correlate account creation database writes with authenticated administrator sessions to flag orphaned provisioning events.
Deploy a web application firewall (WAF) rule that blocks unauthenticated access to AddCashierCode.php.

Monitoring Recommendations

Alert on any privilege change or new account with an elevated role value in the CafeManagement database.
Monitor authentication logs for successful logins by newly created accounts within short intervals of provisioning events.
Retain HTTP request/response logs for the affected endpoint to support forensic review.

How to Mitigate CVE-2026-96556

Immediate Actions Required

Restrict network access to CafeManagement so that only trusted internal networks can reach the application.
Place the application behind an authenticated reverse proxy or VPN until a patched version is available.
Audit existing cashier and administrator accounts and remove any that cannot be attributed to a legitimate administrator action.

Patch Information

No vendor patch is available. The vendor was contacted about this disclosure but did not respond. Organizations should evaluate whether continued use of Neethuharii CafeManagement is acceptable given the absence of vendor support. Track the VulDB Vulnerability #408959 entry for any future updates.

Workarounds

Add server-side authorization checks to AddCashierCode.php that verify the current session belongs to an administrator before processing account creation.
Enforce access control on the addcashier function by validating the role parameter against a server-side allowlist.
Block direct access to AddCashierCode.php at the web server or WAF layer for all clients except authenticated administrative sessions.

bash

# Example Apache configuration to restrict access to the vulnerable endpoint
<Files "AddCashierCode.php">
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</Files>