CVE-2026-14766: Apartment Visitor Management SQLi Flaw

CVE-2026-14766 Overview

CVE-2026-14766 is a SQL injection vulnerability in CodeAstro Apartment Visitor Management System 1.0. The flaw resides in the /apartment-visitor/search-result.php endpoint, where the searchdata POST parameter is passed to a backend SQL query without proper sanitization. Remote attackers with low privileges can manipulate the parameter to execute arbitrary SQL statements against the application database. Public exploit code is available, lowering the barrier to weaponization. The issue is categorized under [CWE-74] as improper neutralization of special elements in output used by a downstream component.

Critical Impact
Authenticated remote attackers can inject SQL statements through the searchdata POST parameter, exposing or altering database contents in affected deployments.

Affected Products

CodeAstro Apartment Visitor Management System 1.0
Component: /apartment-visitor/search-result.php (POST Parameter Handler)
Vulnerable parameter: searchdata

Discovery Timeline

2026-07-05 - CVE-2026-14766 published to NVD
2026-07-06 - Last updated in NVD database

Technical Details for CVE-2026-14766

Vulnerability Analysis

The vulnerability is a classic SQL injection in a PHP-based search feature. The application accepts a searchdata POST parameter and concatenates it into a SQL query executed against the visitor records database. Because the parameter is not parameterized or sanitized, attackers can append SQL syntax to alter query logic.

Exploitation requires network access to the web application and a low-privilege account. Successful injection can disclose visitor records, resident identity data, and other stored information. Attackers may also modify or delete records depending on the database user's privileges. The presence of publicly available proof-of-concept code, as referenced in the GitHub Gist Exploit Code, increases the likelihood of opportunistic scanning and exploitation.

Root Cause

The root cause is missing input validation and lack of prepared statements in the search-result.php handler. User-controlled input from the searchdata field is directly interpolated into a SQL string. Any special SQL metacharacter, such as a single quote or UNION keyword, changes the query structure at execution time.

Attack Vector

The attack vector is network-based over HTTP(S). An authenticated user submits a crafted POST request to /apartment-visitor/search-result.php with a malicious searchdata payload. Typical payloads use UNION SELECT clauses to enumerate database schema and extract data, or Boolean-based blind techniques when errors are suppressed. No user interaction beyond the attacker's own request is required.

A sanitized exploitation pattern involves sending a POST body such as searchdata=' UNION SELECT username,password FROM users-- - to append attacker-controlled query logic. Refer to the VulDB CVE-2026-14766 advisory for additional technical details.

Detection Methods for CVE-2026-14766

Indicators of Compromise

POST requests to /apartment-visitor/search-result.php containing SQL metacharacters such as ', ", --, UNION, SELECT, or OR 1=1 in the searchdata parameter.
Web server or PHP error logs referencing SQL syntax errors originating from search-result.php.
Unusual database query volume or long-running queries tied to the visitor search functionality.

Detection Strategies

Deploy web application firewall rules that inspect POST bodies for SQL injection patterns targeting the searchdata parameter.
Enable database query logging and alert on queries containing UNION SELECT originating from the application service account.
Correlate authentication events with anomalous search activity to identify low-privilege accounts probing the endpoint.

Monitoring Recommendations

Monitor HTTP access logs for repeated POST requests to /apartment-visitor/search-result.php from a single source IP.
Track outbound data transfer volumes from the database host to detect bulk extraction attempts.
Baseline normal searchdata payload lengths and alert on entries exceeding expected input sizes.

How to Mitigate CVE-2026-14766

Immediate Actions Required

Restrict access to /apartment-visitor/search-result.php behind additional network controls or VPN until a fix is applied.
Audit application accounts and revoke any unnecessary low-privilege access to the visitor management system.
Review database and web server logs for injection patterns targeting the searchdata parameter.

Patch Information

No official vendor patch has been published in the referenced advisories at the time of NVD publication. Consult the CodeAstro Security Blog for vendor updates and refer to the VulDB Vuln Report #376356 for tracking remediation status.

Workarounds

Modify search-result.php to use parameterized queries or prepared statements with bound parameters instead of string concatenation.
Apply server-side input validation that restricts searchdata to expected character sets and length limits.
Enforce least-privilege database credentials so the application account cannot read sensitive tables or execute administrative statements.
Deploy a WAF signature to block SQL metacharacters in POST requests to the affected endpoint.

bash

# Example WAF rule (ModSecurity) blocking SQLi patterns on the vulnerable endpoint
SecRule REQUEST_URI "@streq /apartment-visitor/search-result.php" \
    "phase:2,chain,deny,status:403,id:1026014766,\
     msg:'CVE-2026-14766 SQLi attempt on searchdata parameter'"
    SecRule ARGS:searchdata "@rx (?i)(union\s+select|or\s+1=1|--|;|/\*)" \
        "t:none,t:urlDecodeUni"