CVE-2026-95833: Leave Management System 1.0 SQL Injection

CVE-2026-95833 Overview

CVE-2026-95833 is a SQL injection vulnerability in itsourcecode Leave Management System 1.0. The flaw exists in the /module/leavetype/index.php script, where the ID parameter is passed directly to a database query without proper sanitization. Attackers can manipulate this argument remotely to inject arbitrary SQL statements. Public exploit details have been disclosed, increasing the likelihood of opportunistic attacks against exposed installations. The weakness is categorized under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Remote attackers with low-privilege access can extract, modify, or delete database contents by injecting SQL through the ID parameter of the leave type module.

Affected Products

itsourcecode Leave Management System 1.0
Vulnerable file: /module/leavetype/index.php
Vulnerable parameter: ID

Discovery Timeline

2026-09-23 - CVE-2026-95833 published to NVD
2026-09-23 - Last updated in NVD database

Technical Details for CVE-2026-95833

Vulnerability Analysis

The vulnerability resides in the leave type management module of the application. The PHP script /module/leavetype/index.php accepts an ID argument from HTTP request input and incorporates it into a SQL statement without parameterization or input validation. An authenticated attacker with minimal privileges can supply crafted values to alter query semantics.

Successful exploitation allows reading of arbitrary database rows, tampering with leave records, or exfiltration of stored credentials. Because the application handles employee data, exposure risks include personally identifiable information (PII) and authentication material. The exploit has been made public through the referenced VulDB entry and a related GitHub issue.

Root Cause

The root cause is direct concatenation of user-controlled input into a SQL query string. The application does not use prepared statements or bind parameters when constructing queries against the leavetype table. Standard PHP mitigations such as PDO prepared statements or mysqli_real_escape_string are absent from the vulnerable code path.

Attack Vector

The attack is network-based and requires authenticated low-privilege access to the application. An attacker sends a crafted HTTP request to /module/leavetype/index.php with a malicious payload in the ID parameter. Typical payloads include UNION-based extraction, boolean-based blind injection, or time-based blind injection using functions such as SLEEP(). See the VulDB advisory for technical references.

// No verified exploit code is republished here.
// See referenced advisories for public proof-of-concept details.

Detection Methods for CVE-2026-95833

Indicators of Compromise

HTTP requests to /module/leavetype/index.php containing SQL metacharacters such as single quotes, UNION SELECT, --, or /* in the ID parameter.
Web server access logs showing unusually long or encoded query strings targeting the ID argument.
Database error messages referencing the leavetype table returned in HTTP responses.

Detection Strategies

Deploy a web application firewall (WAF) rule to inspect the ID parameter for SQL injection signatures on requests to the leave type module.
Enable database query logging and alert on anomalous statements originating from the Leave Management System's database user.
Correlate authentication events with subsequent malformed requests to identify credential abuse followed by injection attempts.

Monitoring Recommendations

Monitor for outbound data transfers or bulk row reads from the application's database user account.
Track HTTP response code anomalies (500 errors) tied to /module/leavetype/index.php that may indicate injection probing.
Review scheduled reports and audit logs for unauthorized changes to leave records or user tables.

How to Mitigate CVE-2026-95833

Immediate Actions Required

Restrict network access to the Leave Management System to trusted internal users until a fix is applied.
Rotate database credentials used by the application if exploitation is suspected.
Review the leavetype module source and replace concatenated queries with parameterized statements.

Patch Information

No official vendor patch has been published for CVE-2026-95833 at the time of writing. Organizations running itsourcecode Leave Management System 1.0 should monitor the IT Source Code website and the VulDB entry for updates.

Workarounds

Modify /module/leavetype/index.php to validate that the ID parameter is an integer before use in any query.
Apply WAF rules blocking SQL injection payloads against the affected endpoint.
Restrict the application's database account to least-privilege permissions, removing DROP, ALTER, and cross-database read access.

bash

# Example WAF rule concept (ModSecurity)
SecRule ARGS:ID "@detectSQLi" \
  "id:1009583,phase:2,deny,status:403,\
   msg:'CVE-2026-95833 SQLi attempt on leavetype ID parameter'"