CVE-2026-7716 Overview
CVE-2026-7716 is a SQL injection vulnerability [CWE-74] in code-projects Gym Management System 1.0 running on PHP and Windows NT. The flaw resides in /index.php, where the day parameter is concatenated into a backend SQL query without proper sanitization. An authenticated remote attacker can manipulate this parameter to alter query logic and access or modify database records. A public exploit has been disclosed, increasing the likelihood of opportunistic abuse against exposed installations.
Critical Impact
Remote attackers with low privileges can inject arbitrary SQL through the day parameter in /index.php, exposing application data stored in the gym management database.
Affected Products
- code-projects Gym Management System 1.0
- Deployments running on PHP with Windows NT backends
- Installations exposing /index.php over the network
Discovery Timeline
- 2026-05-04 - CVE-2026-7716 published to NVD
- 2026-05-04 - Last updated in NVD database
Technical Details for CVE-2026-7716
Vulnerability Analysis
The vulnerability exists in /index.php of the Gym Management System. The day request parameter flows into an SQL statement without parameterization or input validation. By submitting crafted values for day, an attacker breaks out of the intended query context and appends additional SQL clauses. The issue is exploitable over the network and requires only low-level privileges, with no user interaction. According to VulDB submission #807105, exploit details are publicly available, which lowers the skill required for abuse.
Root Cause
The root cause is improper neutralization of special elements in input used to construct an SQL command. The application directly concatenates the day parameter into a query string rather than using prepared statements with bound parameters. Standard PHP database APIs such as mysqli_prepare or PDO parameter binding are not applied to the affected code path.
Attack Vector
The attack vector is network-based. An attacker sends an HTTP request to /index.php with a manipulated day parameter containing SQL metacharacters such as single quotes, UNION SELECT clauses, or boolean expressions. The injected payload is executed by the database engine, allowing data extraction, authentication state manipulation, or in some configurations, file write operations through MySQL functions. The publicly published proof of concept on GitHub demonstrates the injection technique against the day parameter. See the GitHub CVE SQL Exploit writeup for the technical details and VulDB Vulnerability #360892 for additional context.
Detection Methods for CVE-2026-7716
Indicators of Compromise
- HTTP requests to /index.php containing SQL metacharacters in the day parameter such as ', --, UNION, SELECT, or SLEEP(
- Web server logs showing repeated parameter probing or boolean-based blind injection patterns against day
- Unexpected MySQL error messages or query timing anomalies tied to index.php requests
- Outbound connections from the database host that do not match normal application behavior
Detection Strategies
- Deploy web application firewall rules that flag SQL syntax in query string parameters submitted to /index.php
- Inspect database query logs for malformed statements referencing the day column or unrelated tables
- Correlate authentication anomalies with concurrent index.php requests carrying suspicious payloads
Monitoring Recommendations
- Enable verbose access logging on the web server and forward logs to a centralized analytics platform
- Alert on HTTP 500 responses originating from /index.php that coincide with non-standard parameter content
- Track query volume and average execution time for the affected endpoint to detect blind injection attempts
How to Mitigate CVE-2026-7716
Immediate Actions Required
- Restrict network exposure of the Gym Management System to trusted users until a patched build is deployed
- Apply input filtering at a reverse proxy or WAF to reject SQL metacharacters in the day parameter
- Audit existing database content and account credentials for signs of unauthorized modification
- Rotate database credentials used by the application if exploitation is suspected
Patch Information
No official vendor patch is referenced in the published CVE record. Operators should monitor the code-projects website and the VulDB entry for #360892 for fix availability. Until a vendor update is released, refactor the affected code path to use prepared statements with bound parameters in mysqli or PDO.
Workarounds
- Replace string concatenation in /index.php with parameterized queries using PDO or mysqli prepared statements
- Apply server-side allow-list validation that constrains day to expected numeric or enumerated values
- Run the database account used by the web application with the minimum privileges required
- Place the application behind authentication and an IP allow-list while remediation is in progress
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
