CVE-2025-3817: Online Eyewear Shop SQL Injection Flaw

CVE-2025-3817 Overview

CVE-2025-3817 is a SQL injection vulnerability in SourceCodester Online Eyewear Shop 1.0, developed by oretnom23. The flaw resides in the /oews/classes/Master.php?f=delete_stock endpoint, where the ID parameter is not properly sanitized before being incorporated into a database query. Authenticated attackers can manipulate the ID argument to inject arbitrary SQL statements. The vulnerability is exploitable remotely over the network and has been publicly disclosed. The weakness is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Remote attackers with low-privilege access can manipulate the ID parameter to read, modify, or delete records in the application's MySQL database.

Affected Products

SourceCodester Online Eyewear Shop 1.0
Vendor: oretnom23
Component: /oews/classes/Master.php (delete_stock function)

Discovery Timeline

2025-04-19 - CVE-2025-3817 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-3817

Vulnerability Analysis

The vulnerability resides in the delete_stock handler invoked through /oews/classes/Master.php?f=delete_stock. The handler accepts an ID parameter from the HTTP request and passes it directly into a SQL DELETE statement without parameterization or input validation. An attacker can append SQL syntax to the ID value, breaking out of the intended query context and executing arbitrary SQL commands against the underlying MySQL database.

Because the endpoint operates within the application's stock management workflow, an attacker only needs low-privilege authenticated access to reach the vulnerable code path. The attack requires no user interaction and can be automated against exposed instances. Successful exploitation impacts confidentiality, integrity, and availability of stored data, including product inventory, customer records, and administrative accounts.

Root Cause

The root cause is direct concatenation of attacker-controlled input into a SQL statement. The delete_stock function does not use prepared statements, parameterized queries, or input sanitization before passing the ID value to the database driver. Detailed technical analysis is published in the GitHub CVE Documentation.

Attack Vector

An attacker sends a crafted HTTP POST request to /oews/classes/Master.php?f=delete_stock containing a malicious ID parameter value. By injecting payloads such as boolean-based, time-based, or UNION-based SQL fragments, the attacker can extract data from arbitrary tables, bypass application logic, or destroy records. The exploit has been disclosed publicly in VulDB entry #305723, increasing the likelihood of opportunistic scanning and weaponization.

The vulnerability mechanism is described in detail in the public proof-of-concept; no sanitized exploit code is reproduced here.

Detection Methods for CVE-2025-3817

Indicators of Compromise

HTTP requests to /oews/classes/Master.php?f=delete_stock containing SQL metacharacters such as single quotes, UNION, SLEEP(, or -- within the ID parameter.
Unexpected DELETE operations or anomalous query patterns in MySQL slow query and general query logs.
Web server access logs showing repeated requests to the delete_stock endpoint from a single source IP.

Detection Strategies

Deploy web application firewall (WAF) rules that flag SQL injection patterns targeting the Master.php endpoints of the Online Eyewear Shop application.
Enable database query auditing to capture DELETE and SELECT statements originating from the application service account, then alert on syntactic anomalies.
Correlate authentication logs with stock-management activity to identify low-privilege accounts performing unusual administrative operations.

Monitoring Recommendations

Forward web server access logs and MySQL audit logs to a centralized SIEM for correlation and retention.
Establish baseline query volume for the delete_stock endpoint and alert on statistical deviations.
Monitor outbound traffic from the application host for signs of data exfiltration following suspicious requests.

How to Mitigate CVE-2025-3817

Immediate Actions Required

Restrict network access to the Online Eyewear Shop application to trusted users only until a patch is applied.
Audit existing accounts and rotate credentials for any users who could reach the delete_stock endpoint.
Review database logs for evidence of prior exploitation, focusing on unauthorized DELETE or data-extraction queries.

Patch Information

No official vendor patch has been published for SourceCodester Online Eyewear Shop 1.0 at the time of this writing. Operators should monitor the SourceCodester Security Resources page for updates and consider replacing the affected code path with parameterized queries using PHP PDO or mysqli prepared statements.

Workarounds

Modify /oews/classes/Master.php to cast the ID parameter to an integer with intval() before using it in any SQL statement.
Replace string-concatenated queries in the delete_stock function with prepared statements that bind parameters by type.
Deploy WAF signatures that block SQL metacharacters in the ID parameter for the affected URL pattern.
Disable or remove the delete_stock functionality from public-facing instances if it is not operationally required.

bash

# Example WAF rule (ModSecurity) blocking SQL metacharacters in ID parameter
SecRule REQUEST_URI "@contains /oews/classes/Master.php" \
    "chain,phase:2,deny,status:403,id:1003817,msg:'CVE-2025-3817 SQLi attempt'"
    SecRule ARGS:ID "@rx ([\'\"]|--|\bUNION\b|\bSLEEP\b|\bSELECT\b)" \
        "t:lowercase"