CVE-2026-11507: SQL Injection in CodeAstro Leave Management System 1.0

Technical summary

CVE-2026-11507 is a SQL injection vulnerability (CWE-89, CWE-74) in the /admin/delete_leave_type.php endpoint of CodeAstro Leave Management System 1.0. The leave_type parameter fails to properly sanitize or parameterize user input before incorporating it into SQL queries. An authenticated attacker can inject arbitrary SQL commands to read, modify, or delete database records. The vulnerability is remotely exploitable and has been disclosed publicly with functional proof-of-concept code available.

Business impact

Organizations deploying CodeAstro Leave Management System 1.0 face potential data breach, unauthorized database modification, and operational disruption. An authenticated administrator or user with access to the admin panel could exfiltrate sensitive employee leave records, modify audit trails, or corrupt the leave management database. While authentication is required, compromised admin accounts—whether through phishing, weak credentials, or lateral movement—create a direct attack path.

Affected systems

CodeAstro Leave Management System version 1.0 is confirmed vulnerable. The vulnerability resides in the admin panel's leave type deletion functionality and is accessible to any user with authenticated access to that function. Organizations running earlier or later versions should verify their version status directly with CodeAstro, as no vendor product data has been formally published for this CVE.

Exploitability

Exploitability is moderate to high. The attack requires valid authentication credentials but no special privileges beyond typical admin panel access. The low attack complexity (AC:L) means standard SQL injection techniques apply without additional bypasses needed. Public exploit availability elevates practical risk, as threat actors have functional code. However, the requirement for prior authentication prevents unauthenticated mass exploitation.

Remediation

Immediately update CodeAstro Leave Management System to a patched version if available from the vendor. Pending patching, restrict admin panel access using network segmentation, VPN, or IP allowlisting. Enforce strong, unique passwords for admin accounts and enable multi-factor authentication if supported. Monitor database logs for suspicious SQL queries. Review admin access logs for unauthorized or anomalous activity since disclosure.

Patch guidance

Check CodeAstro's official security advisories and release notes for version 1.0 patches or fixed versions. Apply patches in a test environment first to verify compatibility with your deployment. If no patch is available from CodeAstro, escalate with the vendor for an expected timeline and interim protective measures. Document your patching plan and track deployment across all instances.

Detection guidance

Monitor application and database logs for SQL syntax errors, unusual query patterns, or multiple failed SQL operations in /admin/delete_leave_type.php. Watch for HTTP requests to that endpoint with suspicious leave_type parameter values (e.g., quotes, semicolons, UNION keywords, time-delay commands). Implement Web Application Firewall (WAF) rules to block common SQL injection payloads targeting the leave_type parameter. Track admin authentication events for suspicious login patterns or geographic anomalies.

Why prioritize this

This vulnerability warrants prompt attention due to authentication bypass risk in a sensitive function, public exploit availability, and direct access to employee data. While a CVSS score of 6.3 (MEDIUM) reflects the authentication requirement, the combination of SQL injection severity, public weaponization, and operational sensitivity justifies treating this as a near-term remediation target, especially if your admin credentials have any exposure risk.

Risk score, explained

The CVSS 3.1 score of 6.3 reflects a network-accessible, low-complexity SQL injection with low privileges required (authenticated access). The score factors in partial confidentiality, integrity, and availability impact (C:L, I:L, A:L)—the attacker can read sensitive data, modify records, or disrupt the leave system, but impact is scoped to the affected application rather than the wider system. The lack of user interaction (UI:N) and the availability of public exploits push this toward the upper end of MEDIUM severity.

Frequently asked questions