CVE-2026-10252: House Rental System SQLi Vulnerability

CVE-2026-10252 Overview

CVE-2026-10252 is a SQL injection vulnerability affecting itsourcecode Online House Rental System 1.0. The flaw resides in the /manage_tenant.php script, where the ID parameter is passed directly into a database query without proper sanitization. Attackers can manipulate this parameter to inject arbitrary SQL statements. The vulnerability is exploitable remotely without authentication or user interaction. The exploit has been disclosed publicly, increasing the likelihood of opportunistic abuse against exposed deployments. The weakness is categorized under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Remote, unauthenticated SQL injection through the ID parameter in /manage_tenant.php allows attackers to read, modify, or delete tenant records in the backend database.

Affected Products

itsourcecode Online House Rental System 1.0
Deployments exposing /manage_tenant.php to untrusted networks
Installations not patched against the disclosed SQL injection vector

Discovery Timeline

2026-06-01 - CVE-2026-10252 published to NVD
2026-06-01 - Last updated in NVD database

Technical Details for CVE-2026-10252

Vulnerability Analysis

The vulnerability stems from unsanitized handling of the ID argument inside /manage_tenant.php. The application concatenates this parameter directly into a SQL query string used to retrieve or manage tenant records. An attacker supplies a crafted value for ID through an HTTP request, breaking out of the intended query context. The injected SQL is then executed by the backend database server with the privileges of the application's database user.

Because the Online House Rental System is a PHP-based web application, the injection point is reachable over standard HTTP. No credentials or session context are required to trigger the flaw. Successful exploitation can disclose tenant data, modify rental records, or enable downstream attacks such as authentication bypass through manipulation of stored user records.

Root Cause

The root cause is the absence of parameterized queries or input validation around the ID parameter. The code path constructs the SQL statement through string concatenation, allowing meta-characters such as single quotes, comments, and UNION keywords to alter query semantics. This pattern matches [CWE-74] and the broader SQL injection class.

Attack Vector

The attack vector is network-based. An attacker issues an HTTP GET or POST request to /manage_tenant.php with a malicious ID value. Typical payloads include boolean-based, error-based, and UNION-based SQL injection probes. Public disclosure of the exploit lowers the technical barrier for reproduction. Detailed technical context is available in the VulDB Vulnerability Report and the GitHub Issue Discussion.

Detection Methods for CVE-2026-10252

Indicators of Compromise

HTTP requests to /manage_tenant.php containing SQL meta-characters such as ', --, UNION, or SLEEP( in the ID parameter.
Web server logs showing repeated requests to manage_tenant.php with rapidly changing ID values, indicative of automated injection tooling.
Database error messages returned in HTTP responses referencing MySQL syntax errors tied to the tenant management endpoint.
Unexpected SELECT, UPDATE, or DELETE statements in MySQL query logs originating from the application service account.

Detection Strategies

Deploy web application firewall (WAF) rules that inspect the ID parameter on /manage_tenant.php for SQL injection signatures.
Enable MySQL general query logging during incident response to correlate suspicious queries with web requests.
Apply behavioral analytics on HTTP traffic to identify anomalous parameter entropy and length on the tenant management endpoint.

Monitoring Recommendations

Monitor outbound database traffic for query patterns inconsistent with normal application behavior.
Alert on HTTP 500 responses from /manage_tenant.php, which often indicate failed injection attempts that reveal database errors.
Track authentication and tenant table modifications to detect unauthorized record changes resulting from successful injection.

How to Mitigate CVE-2026-10252

Immediate Actions Required

Restrict network access to the Online House Rental System administrative interface using IP allowlists or VPN-only access.
Deploy WAF signatures that block SQL injection payloads targeting the ID parameter on /manage_tenant.php.
Audit the tenant database for unauthorized records, modified rows, or unexpected administrative accounts.
Rotate database credentials used by the application if compromise is suspected.

Patch Information

No vendor patch is currently referenced in the NVD entry for CVE-2026-10252. Operators should monitor the IT Source Code Resource for vendor updates and review the VulDB CVE-2026-10252 entry for advisory changes. Until a fix is available, source-level remediation requires replacing the vulnerable query with a parameterized prepared statement using PDO or MySQLi bound parameters.

Workarounds

Modify /manage_tenant.php to cast the ID parameter to an integer before use in any SQL query.
Replace string-concatenated SQL with prepared statements using bound parameters across all tenant management code paths.
Apply the principle of least privilege to the database account used by the application, removing DDL and multi-table privileges where not required.
Disable or remove the manage_tenant.php endpoint if it is not actively used in production.

bash

# Configuration example
# Example WAF rule (ModSecurity) blocking SQLi patterns on the vulnerable endpoint
SecRule REQUEST_URI "@beginsWith /manage_tenant.php" \
    "phase:2,chain,deny,status:403,id:1010252,msg:'Block SQLi on manage_tenant.php ID parameter'"
    SecRule ARGS:ID "@rx (?i)(union(\s)+select|sleep\(|--|';|/\*)" "t:none,t:urlDecode"