CVE-2026-10286: CodeAstro Payroll System SQL Injection

CVE-2026-10286 Overview

CVE-2026-10286 is a SQL injection vulnerability in CodeAstro Payroll System 1.0. The flaw resides in the /home_employee.php script, where the emp_id parameter is passed into a database query without proper sanitization. Remote attackers with low-level privileges can manipulate the parameter to inject arbitrary SQL statements. The exploit details have been disclosed publicly, increasing the likelihood of opportunistic exploitation against exposed instances. The vulnerability is classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Authenticated remote attackers can extract, modify, or delete payroll database contents by injecting SQL through the emp_id parameter on /home_employee.php.

Affected Products

CodeAstro Payroll System 1.0
/home_employee.php endpoint
Deployments exposing the emp_id request parameter

Discovery Timeline

2026-06-01 - CVE-2026-10286 published to NVD
2026-06-02 - Last updated in NVD database

Technical Details for CVE-2026-10286

Vulnerability Analysis

The vulnerability is a classic SQL injection issue affecting the home_employee.php component of CodeAstro Payroll System 1.0. The application accepts the emp_id request argument and concatenates it directly into a SQL query without parameterization or input validation. An attacker who supplies crafted SQL syntax through this parameter can break out of the original query context and append arbitrary statements. The EPSS probability is 0.033% (10.163 percentile), but public disclosure of exploit details raises practical risk.

Root Cause

The root cause is improper neutralization of special characters in the emp_id input before it reaches the database layer. The PHP code path responsible for handling employee lookups in /home_employee.php lacks prepared statements or escaping routines. This allows tautology-based, UNION-based, and error-based injection techniques to succeed against the underlying database.

Attack Vector

Exploitation is performed remotely over the network against the vulnerable web endpoint. The attacker requires low-privilege authentication to reach /home_employee.php. Once authenticated, an attacker submits a manipulated emp_id value in either a GET or POST request to execute injected SQL. Successful exploitation can expose employee records, salary data, and credential hashes, and may enable further modification of payroll entries.

Detailed technical analysis is referenced in the GitHub Issue on CVE-2026-10286 and the VulDB CVE-2026-10286 entry.

Detection Methods for CVE-2026-10286

Indicators of Compromise

HTTP requests to /home_employee.php containing SQL meta-characters such as ', --, UNION, SELECT, or SLEEP( in the emp_id parameter.
Web server access logs showing unusually long or URL-encoded emp_id values from a single source IP.
Database error messages or HTTP 500 responses correlated with home_employee.php requests.
Spikes in database read volume or unexpected SELECT queries against employee tables.

Detection Strategies

Deploy web application firewall (WAF) signatures that flag SQL injection patterns targeting the emp_id parameter.
Enable database query logging and alert on queries originating from home_employee.php that contain stacked statements or UNION SELECT clauses.
Correlate authentication events with subsequent injection attempts to identify compromised low-privilege accounts.

Monitoring Recommendations

Forward web server and database logs to a centralized analytics platform for retention and correlation.
Baseline the normal request rate and parameter length for /home_employee.php, then alert on deviations.
Review payroll table audit trails for unauthorized record changes or bulk reads.

How to Mitigate CVE-2026-10286

Immediate Actions Required

Restrict network access to the payroll application until a patched build is deployed.
Revoke and rotate database credentials used by the web application if injection attempts are observed.
Audit user accounts on the payroll system and disable unused low-privilege accounts.
Review database logs for the past 30 days for indicators consistent with emp_id injection.

Patch Information

At the time of publication, no official patch has been published by the vendor. Monitor the CodeAstro Security Resource and the VulDB Vulnerability #367579 entry for fixed releases or vendor advisories.

Workarounds

Place the application behind a WAF and enable SQL injection rule sets that inspect the emp_id parameter.
Apply server-side input validation to ensure emp_id accepts only numeric values before reaching the database layer.
Refactor the vulnerable query in /home_employee.php to use parameterized statements or PDO prepared queries.
Limit database account privileges so the web application user cannot execute schema changes or access sensitive tables beyond payroll requirements.

bash

# Configuration example: enforce numeric emp_id at the reverse proxy (nginx)
location = /home_employee.php {
    if ($arg_emp_id !~ "^[0-9]+$") {
        return 400;
    }
    proxy_pass http://payroll_backend;
}