CVE-2026-4826
SQL Injection in SourceCodester Sales Inventory /update_stock.php
Publication date: 2026-03-26
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ahsanriaz26gmailcom | sales_and_inventory_system | 1.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-74 | The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. |
| CWE-89 | The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-4826 is a SQL Injection vulnerability found in SourceCodester Sales and Inventory System version 1.0, specifically in the update_stock.php file. The issue arises because the application does not properly sanitize the 'sid' parameter in HTTP GET requests. This allows an authenticated attacker to inject arbitrary SQL commands into the backend MySQL database.
- The vulnerable parameter is 'sid' passed via HTTP GET.
- The injection types supported include UNION-based, Boolean-based blind, and Time-based blind SQL injection.
- Exploitation requires logging into the application and sending crafted HTTP GET requests with malicious payloads to update_stock.php.
This vulnerability allows attackers to manipulate database queries, potentially leading to unauthorized data disclosure and further system compromise.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The SQL Injection vulnerability in SourceCodester Sales and Inventory System 1.0 allows attackers to exfiltrate sensitive data by manipulating database queries. This unauthorized data disclosure can lead to exposure of personal or sensitive information stored in the system.
Such data breaches can result in non-compliance with common standards and regulations like GDPR and HIPAA, which mandate the protection of personal and sensitive data. Failure to secure the system against this vulnerability could lead to violations of these regulations, potentially resulting in legal penalties and loss of trust.
What immediate steps should I take to mitigate this vulnerability?
To mitigate the CVE-2026-4826 SQL Injection vulnerability in the update_stock.php component, immediate steps include:
- Restrict access to the vulnerable update_stock.php endpoint to only trusted and authenticated users.
- Avoid using or exposing the vulnerable 'sid' HTTP GET parameter until a patch or fix is applied.
- Use web application firewalls (WAF) or intrusion detection/prevention systems to detect and block SQL injection attempts targeting the 'sid' parameter.
- Monitor logs for suspicious activity involving the update_stock.php script and the 'sid' parameter.
- Apply input validation and sanitization on the 'sid' parameter to prevent injection if you have the ability to modify the source code.
- If possible, update or patch the Inventory System to a version that addresses this vulnerability once available.
How can this vulnerability impact me? :
This vulnerability can have several impacts on affected systems:
- Attackers can exfiltrate sensitive data by retrieving and displaying database contents using UNION-based SQL injection.
- They can enumerate the database schema, tables, and columns, gaining detailed knowledge of the backend database structure.
- Blind SQL injection techniques allow attackers to extract data even when direct output is not available.
- Overall, this can lead to unauthorized disclosure of sensitive information and potential further compromise of the system.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by testing the 'sid' parameter in HTTP GET requests to the update_stock.php file for SQL injection flaws.
One effective method is to use automated tools like sqlmap to send crafted requests and detect SQL injection.
An example sqlmap command to detect this vulnerability is:
- sqlmap -u "http://127.0.0.1:8089/update_stock.php?sid=42&table=stock_details&return=view_product.php" --batch -v 6 --risk=3 --cookie "PHPSESSID=YOUR_COOKIE_HERE"
Additionally, manual testing can be done by injecting payloads such as UNION-based, Boolean-based blind, or Time-based blind SQL injection payloads into the 'sid' parameter and observing the response.