CVE-2026-92405: Inventory and Monitoring System SQL Injection

CVE-2026-92405 Overview

CVE-2026-92405 is a SQL injection vulnerability in SourceCodester Inventory and Monitoring System 1.0. The flaw resides in an unspecified function within /index.php, where the Username parameter is passed to a backend database query without proper sanitization. Attackers can manipulate the parameter to inject arbitrary SQL statements against the underlying database. The vulnerability is remotely exploitable over the network, requires no authentication, and no user interaction. Public disclosure of the exploit technique has occurred, increasing the likelihood of opportunistic exploitation against exposed instances. The weakness is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Unauthenticated remote attackers can inject SQL through the Username parameter of /index.php, potentially exposing or altering database contents.

Affected Products

SourceCodester Inventory and Monitoring System 1.0
Deployments exposing /index.php to untrusted networks
Downstream forks or derivatives reusing the vulnerable login handler

Discovery Timeline

2026-09-16 - CVE-2026-92405 published to NVD
2026-09-16 - Last updated in NVD database

Technical Details for CVE-2026-92405

Vulnerability Analysis

The vulnerability affects the login handling logic exposed through /index.php in SourceCodester Inventory and Monitoring System 1.0. The Username request parameter is concatenated into a SQL statement without parameterization or input validation. An attacker submits a crafted Username value that terminates the intended query and appends attacker-controlled SQL. Because the endpoint is reachable pre-authentication, exploitation requires only network access to the web application. Successful exploitation can expose stored credentials, read arbitrary tables, or modify records depending on database privileges granted to the web application account.

Root Cause

The root cause is improper neutralization of special characters in user-supplied input before it is used in a SQL query [CWE-74]. The application constructs SQL by concatenating the Username value directly into the query string rather than using prepared statements or parameter binding.

Attack Vector

Exploitation is performed remotely over HTTP by submitting a crafted POST or GET request to /index.php containing a malicious Username value. No credentials are required. Attackers typically use boolean-based, error-based, or UNION-based SQL injection techniques to enumerate the schema and extract data. Automated tooling can identify and weaponize the endpoint at scale. Refer to the GitHub issue discussion and the VulDB CVE-2026-92405 entry for public technical details.

Detection Methods for CVE-2026-92405

Indicators of Compromise

HTTP requests to /index.php containing SQL metacharacters such as single quotes, --, UNION SELECT, or OR 1=1 inside the Username parameter.
Web server or application logs showing repeated failed authentication attempts from a single source with unusual Username payload lengths.
Unexpected database errors, stack traces, or long response times originating from the login endpoint.

Detection Strategies

Deploy web application firewall (WAF) signatures that flag SQL injection patterns targeting login parameters.
Correlate HTTP access logs with database audit logs to identify anomalous queries triggered by requests to /index.php.
Alert on outbound data transfers or query result sizes that exceed typical login flow baselines.

Monitoring Recommendations

Enable verbose logging on the web server for the /index.php endpoint, including request bodies where operationally acceptable.
Monitor database service accounts for unexpected SELECT, UNION, or INFORMATION_SCHEMA queries.
Track authentication endpoint request rates and block sources exceeding reasonable thresholds.

How to Mitigate CVE-2026-92405

Immediate Actions Required

Restrict network access to the Inventory and Monitoring System until a patch is available, exposing it only to trusted networks or through a VPN.
Deploy WAF rules that reject requests to /index.php containing SQL injection payloads in the Username parameter.
Rotate any credentials stored in the application database, as pre-existing exploitation cannot be excluded once a PoC is public.

Patch Information

No vendor patch has been referenced in the available advisory data. Administrators should monitor SourceCodester for updates and consider migrating to an actively maintained inventory management platform. Until a fix is released, apply the workarounds below and treat the application as untrusted.

Workarounds

Modify the affected login code to use parameterized queries or prepared statements for the Username field.
Enforce strict server-side input validation, rejecting non-alphanumeric characters in username fields where feasible.
Run the web application database account with least privilege, removing FILE, DROP, and cross-database read permissions.
Place the application behind an authenticating reverse proxy or IP allowlist to reduce exposure.

bash

# Example ModSecurity rule to block SQLi patterns on the Username parameter
SecRule ARGS:Username "@detectSQLi" \
    "id:1092405,phase:2,deny,status:403,\
    msg:'Potential SQL Injection targeting CVE-2026-92405',\
    logdata:'Matched Data: %{MATCHED_VAR} in %{MATCHED_VAR_NAME}'"