CVE-2026-15134 in Simple Online Leave Management System
Summary
by MITRE • 07/09/2026
A vulnerability was determined in CodeAstro Simple Online Leave Management System 1.0. Affected by this vulnerability is an unknown functionality of the file /SimpleOnlineLeave/index.php. Executing a manipulation of the argument email can lead to sql injection. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 07/09/2026
The CodeAstro Simple Online Leave Management System version 1.0 contains a critical sql injection vulnerability that affects the index.php file through improper input validation of the email parameter. This vulnerability represents a classic security flaw where user-supplied data is directly incorporated into database queries without adequate sanitization or parameterization. The attack vector is remote, meaning malicious actors can exploit this weakness from external systems without requiring physical access to the target environment. The vulnerability has been publicly disclosed and is actively being utilized by threat actors, significantly increasing the risk exposure for affected organizations.
The technical implementation of this vulnerability stems from inadequate input validation practices within the application's php code. When a user submits an email address through the index.php interface, the system fails to properly sanitize or escape the input before incorporating it into sql query construction. This allows attackers to inject malicious sql payloads that can manipulate database operations such as SELECT, INSERT, UPDATE, or DELETE commands. The CWE classification for this vulnerability aligns with CWE-89: Improper Neutralization of Special Elements used in an SQL Command, which is one of the most prevalent and dangerous categories of web application vulnerabilities. The attack surface is particularly concerning because email addresses are commonly used as identifiers in authentication and user management systems, making this a prime target for exploitation.
The operational impact of this vulnerability extends beyond simple data theft, encompassing potential system compromise, unauthorized access to sensitive employee information, and possible complete database takeover. Attackers could leverage this weakness to extract confidential leave records, personal employee details, administrative credentials, or other sensitive organizational data. The remote exploit capability means that threat actors can target vulnerable systems from anywhere on the internet without requiring local network access. This vulnerability directly maps to several ATT&CK techniques including T1190: Exploit Public-Facing Application and T1071.004: Application Layer Protocol: DNS, as attackers may use the compromised system for further reconnaissance or lateral movement within target networks.
Organizations utilizing this vulnerable software must implement immediate mitigations to protect against exploitation attempts. The primary remediation involves implementing proper parameterized queries or prepared statements throughout the application codebase, particularly in the index.php file and any other locations where user input interacts with database operations. Input validation should be strengthened through whitelisting approaches for email addresses and other user-supplied data. Additionally, organizations should deploy web application firewalls to monitor and block suspicious sql injection patterns targeting this specific vulnerability. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other parts of the application. The vulnerability's public disclosure status necessitates urgent patching or mitigation implementation as attackers are actively exploiting this weakness in the wild, making it a high-priority security concern for any organization using this software version.