CVE-2026-14795 Overview
CVE-2026-14795 is a SQL injection vulnerability in CodeAstro Apartment Visitor Management System 1.0. The flaw resides in the /apartment-visitor/action-visitor.php script, where the remark parameter is passed to a database query without proper sanitization. Remote attackers with low privileges can manipulate the parameter to inject arbitrary SQL statements. The exploit has been publicly disclosed, increasing the likelihood of opportunistic attempts against exposed installations. The issue is tracked under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).
Critical Impact
Authenticated remote attackers can inject SQL commands through the remark parameter, potentially exposing or altering visitor records stored in the backend database.
Affected Products
- CodeAstro Apartment Visitor Management System 1.0
- Vulnerable script: /apartment-visitor/action-visitor.php
- Vulnerable parameter: remark
Discovery Timeline
- 2026-07-06 - CVE-2026-14795 published to NVD
- 2026-07-06 - Last updated in NVD database
Technical Details for CVE-2026-14795
Vulnerability Analysis
The vulnerability exists in action-visitor.php, which processes visitor record actions submitted through HTTP requests. The remark parameter is concatenated into an SQL statement without parameterization or input escaping. An authenticated user can supply crafted SQL syntax through remark to alter query logic, extract records, or manipulate stored data. Public disclosure of exploit details lowers the barrier to abuse. The EPSS probability of 0.2% reflects limited automated exploitation activity to date, but availability of the technique means opportunistic scanning is plausible.
Root Cause
The root cause is missing input neutralization on a user-controlled string before it reaches the database layer. The application does not use prepared statements or bound parameters, so attacker-supplied metacharacters break out of the intended query context. This class of defect is categorized under [CWE-74] and specifically manifests as SQL injection.
Attack Vector
Exploitation requires network access to the web application and a low-privilege authenticated session. The attacker submits a request that reaches action-visitor.php with a malicious remark value containing SQL syntax. No user interaction is required beyond the attacker's own request. Impact is limited in confidentiality, integrity, and availability per the CVSS 4.0 vector, but data tampering and disclosure of visitor records remain realistic outcomes.
No verified proof-of-concept code is available in the referenced advisories. Refer to the VulDB CVE-2026-14795 entry and the GitHub CVE Issue Discussion for additional technical context.
Detection Methods for CVE-2026-14795
Indicators of Compromise
- HTTP POST or GET requests to /apartment-visitor/action-visitor.php where the remark field contains SQL metacharacters such as ', --, UNION, SELECT, OR 1=1, or SLEEP(.
- Unusual database errors emitted by the application referencing syntax issues in visitor-related queries.
- Unexpected creation, modification, or deletion of rows in the visitor tables.
Detection Strategies
- Deploy web application firewall (WAF) signatures targeting SQL injection patterns in POST bodies submitted to action-visitor.php.
- Enable database query logging and alert on syntactically anomalous queries originating from the visitor management module.
- Review authentication logs for accounts submitting a high volume of requests to /apartment-visitor/.
Monitoring Recommendations
- Correlate web server access logs with database audit logs to identify injection attempts that reached the backend.
- Monitor for outbound connections initiated by the database host, which can indicate successful data exfiltration.
- Track schema changes and privileged database operations that fall outside routine application behavior.
How to Mitigate CVE-2026-14795
Immediate Actions Required
- Restrict access to the Apartment Visitor Management System to trusted networks or place it behind a VPN until a fix is available.
- Revoke or rotate credentials for any low-privilege accounts that are not actively required.
- Enable WAF rules that block SQL injection payloads targeting the remark parameter.
Patch Information
No vendor patch is referenced in the available advisories at the time of publication. Monitor the CodeAstro Security Resources page and the VulDB Vulnerability #376389 entry for updates. If a fix is not forthcoming, apply source-level remediation by converting the affected query to a prepared statement with bound parameters and by validating the remark field against an allowlist.
Workarounds
- Modify action-visitor.php to use parameterized queries (for example, PDO with bindParam) instead of string concatenation.
- Apply strict server-side input validation on the remark field, rejecting SQL control characters.
- Enforce least-privilege database accounts so the application user cannot execute schema changes or read unrelated tables.
# Example: enable ModSecurity CRS rules that cover SQL injection
# /etc/modsecurity/modsecurity.conf
SecRuleEngine On
Include /etc/modsecurity/crs/rules/REQUEST-942-APPLICATION-ATTACK-SQLI.conf
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
