CVE-2026-71248 in Inventory-Management-System-PHP
Summary
by MITRE • 08/05/2026
Inventory-Management-System-PHP's login.php constructs its authentication query via direct string concatenation of raw POST parameters: $sql = "select * from user where email = '$email' and password = '$password'", with no escaping or parameterization, allowing authentication bypass via a payload such as email=' OR 1=1 LIMIT 1-- -. Separately, delete.php executes mysqli_query($db, "DELETE FROM product WHERE product_id=" . $_GET['id']) with no authentication check and no validation of the id parameter, allowing an unauthenticated attacker to delete arbitrary product rows or perform blind SQL injection via payloads such as id=0 OR SLEEP(5).
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Analysis
by VulDB Data Team • 08/05/2026
This vulnerability landscape presents a critical security architecture failure within the Inventory Management System PHP application, where multiple interconnected flaws create extensive attack surface for unauthorized access and data manipulation. The primary authentication bypass vulnerability exists in the login.php file through improper input handling that directly incorporates user-supplied parameters into SQL queries without any sanitization or parameterization mechanisms. This classic sql injection flaw stems from the concatenation of raw POST data into the sql query string, creating an environment where malicious actors can manipulate the authentication logic by injecting sql fragments that alter the intended query execution path. The specific payload email=' OR 1=1 LIMIT 1-- - demonstrates how an attacker can exploit this vulnerability to bypass authentication entirely by leveraging sql comment syntax to neutralize subsequent query conditions while ensuring the query returns a valid result set. This vulnerability maps directly to cwe-89 sql injection and aligns with attack techniques documented in the mitre att&ck framework under initial access and credential access phases, specifically targeting the credential access tactic through unauthorized authentication bypass.
The second vulnerability in delete.php reveals a separate but equally dangerous flaw that combines inadequate authentication controls with insufficient input validation for database operations. This file executes direct sql deletion commands based on user-supplied get parameters without any session verification or parameter sanitization, creating an unrestricted deletion attack vector where attackers can manipulate the product_id parameter to target arbitrary database records. The vulnerability extends beyond simple data deletion through blind sql injection capabilities that can be exploited via payloads like id=0 OR SLEEP(5), which allows attackers to perform time-based sql injection attacks and potentially extract information from the database through timing variations. This represents a combination of cwe-284 improper access control and cwe-94 code injection vulnerabilities, with the attack pattern aligning with att&ck techniques under privilege escalation and defense evasion categories. The absence of authentication checks combined with direct parameter concatenation creates an environment where unauthorized users can execute destructive database operations while simultaneously gaining intelligence about the underlying database structure through blind sql injection methods.
The operational impact of these vulnerabilities extends far beyond simple data exposure, creating a comprehensive attack surface that enables complete system compromise and data destruction capabilities. An attacker exploiting both vulnerabilities could first bypass authentication to gain administrative access, then leverage the unauthenticated deletion functionality to remove critical product records, potentially causing business disruption and financial loss through inventory manipulation. The combination of these flaws allows for a multi-stage attack where unauthorized access leads to data corruption and potential information disclosure through blind sql injection techniques that can reveal database schema information, user credentials, or other sensitive system data. Organizations implementing such systems face significant risk exposure including regulatory compliance violations under standards like pci dss and gdpr, along with potential legal ramifications from data breaches resulting from these well-documented vulnerability patterns. The vulnerabilities demonstrate critical design flaws in input validation and access control implementation that violate fundamental security principles established in industry frameworks including owasp top ten and iso 27001 security controls.
Mitigation strategies must address both the immediate code-level vulnerabilities and implement comprehensive architectural improvements to prevent similar issues in future development cycles. Immediate remediation requires implementing proper sql parameterization techniques throughout all database query execution paths, utilizing prepared statements with bound parameters to eliminate injection possibilities entirely. Authentication checks must be enforced on all sensitive operations including product deletion functions, ensuring that only authorized users can perform administrative actions through session validation and role-based access controls. Input validation should be implemented at multiple layers including application-level parameter sanitization, database-level query validation, and network-level filtering to create defense-in-depth protection against similar attack vectors. Organizations should implement comprehensive security testing including automated sql injection scanning, manual penetration testing, and code reviews following established frameworks like the owasp application security verification standard. Additionally, implementing proper logging and monitoring capabilities will help detect exploitation attempts and provide forensic evidence for incident response activities, while adhering to industry standards such as nist cybersecurity framework and iso 27001 controls for comprehensive information security management.