CVE-2025-15437 in LigeroSmart
Summary
by MITRE • 01/02/2026
A vulnerability was found in LigeroSmart up to 6.1.24. This affects an unknown part of the component Environment Variable Handler. Performing a manipulation of the argument REQUEST_URI results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used. Upgrading to version 6.1.26 and 6.3 is able to mitigate this issue. The patch is named 264ac5b2be5b3c673ebd8cb862e673f5d300d9a7. The affected component should be upgraded.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 02/27/2026
CVE-2025-15437 represents a cross site scripting vulnerability within LigeroSmart version 6.1.24 and earlier, specifically within the Environment Variable Handler component. This vulnerability arises from insufficient input validation when processing the REQUEST_URI argument, allowing malicious actors to inject arbitrary script code into web responses. The flaw exists in the application's handling of environment variables, particularly those related to web request parameters, creating a pathway for attackers to execute malicious scripts in the context of affected users' browsers. The vulnerability is classified as a client-side attack vector, where the malicious payload is delivered through manipulated web requests rather than server-side code execution.
The technical exploitation of this vulnerability occurs when an attacker crafts a specially formatted REQUEST_URI parameter that contains malicious script code. When the vulnerable application processes this parameter through its Environment Variable Handler, the script code gets embedded into the web response without proper sanitization or encoding. This creates a persistent XSS condition where any user accessing the affected application with the malicious parameter will execute the injected code. The vulnerability is remotely exploitable, meaning attackers can trigger the attack through web browsers without requiring local system access or physical presence. The fact that this exploit has been made public significantly increases the risk profile, as it eliminates the element of surprise and provides attackers with a ready-to-use attack vector.
The operational impact of CVE-2025-15437 extends beyond simple script execution, potentially enabling attackers to perform session hijacking, steal user credentials, manipulate application data, or redirect users to malicious websites. The vulnerability affects the core web application functionality by compromising the integrity of user interactions and potentially allowing attackers to establish persistent access to user sessions. Organizations using LigeroSmart versions prior to 6.1.26 or 6.3 are at risk of unauthorized data access, user account compromise, and potential lateral movement within network environments. The vulnerability's classification under CWE-79 (Cross-site Scripting) aligns with the common exploitation patterns of XSS vulnerabilities, where input validation failures create opportunities for malicious script injection. This vulnerability also maps to ATT&CK technique T1566.001 (Phishing via Social Engineering) and T1059.007 (Command and Scripting Interpreter: JavaScript), as attackers can leverage the XSS condition to deliver malicious JavaScript payloads.
The recommended mitigation strategy involves immediate upgrading to LigeroSmart versions 6.1.26 or 6.3, which contain the patched Environment Variable Handler component. The specific patch identified as 264ac5b2be5b3c673ebd8cb862e673f5d300d9a7 addresses the input validation weakness in the REQUEST_URI parameter handling. Organizations should conduct thorough testing of the updated versions to ensure compatibility with existing configurations and workflows. Additional protective measures include implementing Content Security Policy headers, deploying web application firewalls, and conducting regular security assessments of the application's input handling mechanisms. The patch addresses the root cause by implementing proper input sanitization and output encoding for environment variables, preventing malicious scripts from being executed in user contexts. Security teams should also monitor for any potential variant attacks or related vulnerabilities that might exploit similar input validation weaknesses in the application's architecture.