CVE-2026-14798: Apartment Visitor Management SQLi Flaw

CVE-2026-14798 Overview

CVE-2026-14798 is a SQL injection vulnerability in CodeAstro Apartment Visitor Management System 1.0. The flaw resides in the /apartment-visitor/visitor-entry.php script, where the visname parameter is passed to a database query without proper sanitization. An authenticated remote attacker with low privileges can manipulate the parameter to inject arbitrary SQL statements. Public exploit details are available, which lowers the barrier to abuse against exposed installations. The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output).

Critical Impact
Attackers can inject SQL statements via the visname parameter, potentially reading, modifying, or deleting visitor and tenant records stored in the application database.

Affected Products

CodeAstro Apartment Visitor Management System 1.0
/apartment-visitor/visitor-entry.php endpoint
Deployments using the affected visname input handler

Discovery Timeline

2026-07-06 - CVE-2026-14798 published to NVD
2026-07-07 - Last updated in NVD database

Technical Details for CVE-2026-14798

Vulnerability Analysis

The vulnerability originates from unsafe handling of user-controlled input in the visitor entry workflow. The visitor-entry.php script accepts the visname argument from an HTTP request and concatenates it into a SQL query. Because the value is not parameterized or escaped, attackers can terminate the intended query and append additional SQL syntax. The attack is remote and requires only low-privileged access, matching a typical authenticated CRUD endpoint in a small-scale PHP application. Public disclosure through VulDB and a GitHub issue tracker means proof-of-concept details are already circulating. EPSS data indicates a low near-term exploitation probability, but exposed instances remain at direct risk because exploitation requires no specialized tooling.

Root Cause

The root cause is missing input neutralization on the visname parameter before it reaches the SQL query builder. The application does not use prepared statements or parameter binding, allowing metacharacters such as single quotes, comments, and UNION clauses to alter query structure. This class of defect is tracked under CWE-74.

Attack Vector

An attacker sends a crafted HTTP request to /apartment-visitor/visitor-entry.php with a malicious visname payload. The payload breaks out of the intended string context and injects secondary SQL clauses. Depending on database privileges, the attacker can extract records, perform boolean or time-based blind extraction, or manipulate stored data. No user interaction is required beyond submitting the request. See the VulDB entry for CVE-2026-14798 and the GitHub CVE Issue Discussion for reference details.

Detection Methods for CVE-2026-14798

Indicators of Compromise

HTTP requests to /apartment-visitor/visitor-entry.php containing SQL metacharacters such as ', --, UNION, or SLEEP( in the visname parameter.
Web server or PHP error logs referencing SQL syntax failures tied to visitor entry submissions.
Unexpected database queries against visitor tables originating from the application service account.

Detection Strategies

Deploy web application firewall signatures that flag SQL keywords and tautologies in POST/GET parameters targeting visitor-entry.php.
Enable database query logging and alert on anomalous query shapes such as stacked queries or UNION SELECT patterns from the visitor entry code path.
Correlate authentication events with subsequent SQL errors to identify low-privileged accounts probing the endpoint.

Monitoring Recommendations

Monitor the visitor management application logs for repeated 500-series errors on the entry endpoint.
Track database read volume and row counts returned to the web tier for baseline deviations.
Alert on outbound connections from the database host that could indicate data exfiltration following successful injection.

How to Mitigate CVE-2026-14798

Immediate Actions Required

Restrict network access to the Apartment Visitor Management System so only trusted management networks can reach /apartment-visitor/visitor-entry.php.
Audit application accounts and rotate credentials for any low-privileged users who could reach the vulnerable endpoint.
Review recent visitor entry submissions and database logs for signs of injection attempts.

Patch Information

No vendor patch has been referenced in the published advisory data. Operators should monitor the CodeAstro website and the VulDB Vulnerability Details page for future fix announcements. Until a patch is available, apply the workarounds below.

Workarounds

Place the application behind a web application firewall with SQL injection rules tuned for the visname parameter.
Modify the affected PHP code to use PDO or MySQLi prepared statements with bound parameters instead of string concatenation.
Apply strict server-side input validation that rejects SQL metacharacters and enforces expected character sets for visitor names.
Enforce least-privilege on the database account used by the application to limit the impact of a successful injection.

bash

# Configuration example: block suspicious visname payloads at the reverse proxy
# Example ModSecurity rule (illustrative)
SecRule ARGS:visname "@rx (?i)(union(\s|/\*.*\*/)+select|sleep\s*\(|--|;)" \
    "id:1014798,phase:2,deny,status:403,log,msg:'CVE-2026-14798 SQLi attempt on visname'"