CVE-2026-13548: Hospital Management System SQLi Flaw

CVE-2026-13548 Overview

CVE-2026-13548 is a SQL injection vulnerability in itsourcecode Hospital Management System 1.0. The flaw resides in the /doctortimings.php script, where the editid parameter is passed to a database query without proper sanitization. Remote attackers with low-level privileges can manipulate this parameter to inject arbitrary SQL statements. Public exploitation details are available, increasing the likelihood of opportunistic attacks against exposed installations. The weakness is classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Authenticated remote attackers can inject SQL statements through the editid parameter in /doctortimings.php, potentially exposing or modifying hospital records stored in the backend database.

Affected Products

itsourcecode Hospital Management System 1.0
Deployments distributed through itsourcecode.com
Downstream forks reusing the vulnerable doctortimings.php handler

Discovery Timeline

2026-06-29 - CVE-2026-13548 published to NVD
2026-06-30 - Last updated in NVD database

Technical Details for CVE-2026-13548

Vulnerability Analysis

The vulnerability is a classic SQL injection issue in a PHP-based hospital management application. The /doctortimings.php endpoint reads the editid request argument and concatenates it into an SQL query without parameterization or input validation. Because the endpoint accepts remote requests, an attacker can supply crafted values that alter query semantics.

Exploitation requires low privileges but no user interaction. The impact is limited to partial confidentiality, integrity, and availability effects on the backing database, which typically stores patient scheduling, doctor, and appointment data. Publicly available proof-of-concept material lowers the barrier to exploitation.

Root Cause

The root cause is improper neutralization of user-controlled input embedded in a downstream SQL statement [CWE-74]. The editid parameter is treated as trusted data and interpolated directly into the query string, allowing statement structure manipulation.

Attack Vector

The attack vector is network-based. An attacker submits an HTTP request to /doctortimings.php with a manipulated editid value containing SQL metacharacters or UNION-based payloads. Successful injection can read arbitrary rows, modify records, or trigger error-based data leaks. No specialized tooling is required, and the technique is documented in the referenced GitHub Issue Report and VulDB CVE-2026-13548 advisories.

No verified exploit code is published in this advisory.
Refer to the linked VulDB and GitHub references for technical proof-of-concept details.

Detection Methods for CVE-2026-13548

Indicators of Compromise

HTTP requests to /doctortimings.php containing SQL metacharacters such as ', ", --, UNION, or SLEEP( in the editid parameter
Web server access logs showing repeated editid values with unusual length or encoded payloads (%27, %20OR%20)
Unexpected database errors or mysqli warnings surfacing in application logs tied to the doctor timings module
Outbound database connections or record modifications not associated with legitimate administrator sessions

Detection Strategies

Deploy web application firewall signatures that inspect the editid query and POST parameters for SQL syntax
Enable database query logging and alert on queries against the doctortimings table that contain tautologies or UNION SELECT clauses
Correlate authenticated session activity with anomalous query patterns to distinguish valid edits from injection attempts

Monitoring Recommendations

Forward web and database logs to a centralized analytics platform and retain them for post-incident review
Baseline normal parameter values for /doctortimings.php and alert on statistical deviations
Monitor for privilege escalation or new administrative accounts created through the hospital management application

How to Mitigate CVE-2026-13548

Immediate Actions Required

Restrict access to /doctortimings.php to trusted internal networks or authenticated administrators only
Apply virtual patching rules at the WAF layer to block SQL metacharacters in the editid parameter
Audit the doctortimings table and related records for unauthorized modifications since deployment

Patch Information

No official vendor patch has been published for itsourcecode Hospital Management System 1.0 at the time of writing. Operators should track the itsourcecode project pages and the VulDB Vulnerability #374556 entry for updates. Until a fix is available, apply the workarounds below.

Workarounds

Rewrite the affected query in /doctortimings.php to use parameterized statements via PDO::prepare or mysqli_prepare
Enforce server-side validation to accept only integer values for the editid parameter
Run the application database account with least privilege, removing rights to DROP, CREATE, or cross-schema access
Consider taking the application offline if it is internet-exposed and cannot be placed behind authentication or a WAF

bash

# Example nginx rule to block non-numeric editid values
location /doctortimings.php {
    if ($arg_editid !~ "^[0-9]+$") {
        return 403;
    }
}