CVE-2026-34741 in iTop
Summary
by MITRE • 08/22/2026
Combodo iTop is a web based IT service management tool. Prior to 3.2.3, authentication bypass allows unauthenticated remote attackers to execute arbitrary PHP files from the env-production directory on a new iTop instance in the production environment. This issue has been fixed in version 3.2.3.
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Analysis
by VulDB Data Team • 08/22/2026
The vulnerability identified within Combodo i versions prior to 3.2.3 represents a critical authentication bypass flaw that fundamentally compromises the integrity of the application's security model. As an IT service management platform, iTop relies on strict access controls to protect sensitive operational data and configuration settings. The specific technical flaw allows unauthenticated remote attackers to execute arbitrary PHP files located within the env-production directory. This capability is particularly severe because it grants direct code execution privileges without requiring valid credentials or prior authentication steps. In a typical web application architecture, the production environment contains core logic, database connections, and sensitive configurations that must be shielded from public access. By bypassing these protections, an attacker gains a foothold equivalent to having administrative control over the underlying server infrastructure hosting the iTop instance.
From a technical perspective, this vulnerability stems from improper input validation or misconfigured web server directives that fail to restrict direct file access in sensitive directories. When an unauthenticated user targets specific PHP scripts within the env-production folder, the application fails to enforce session checks or authentication tokens before processing the request. This oversight allows for arbitrary code execution, which is classified under CWE-284 Improper Access Control and CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code. The ability to execute PHP files remotely means that an attacker can potentially read configuration files containing database credentials, modify system parameters, or inject malicious payloads into the application logic. This aligns with MITRE ATT&CK technique T1059 Command and Scripting Interpreter, as it enables the execution of commands through interpreted languages like PHP, facilitating further exploitation steps such as data exfiltration or lateral movement within the network.
The operational impact of this vulnerability is profound for organizations relying on iTop for IT service management. Since authentication can be completely bypassed, any individual with internet access to the vulnerable instance can exploit it without detection by standard login monitoring systems. Attackers could extract sensitive business information stored in the database via configuration files or directly through SQL injection if other related flaws exist. Furthermore, arbitrary code execution allows for the installation of web shells, turning the server into a pivot point for broader network attacks. This compromises confidentiality, integrity, and availability, potentially leading to significant financial loss, regulatory non-compliance, and reputational damage. The lack of authentication requirement makes this vulnerability highly exploitable by automated scanning tools and opportunistic attackers alike, increasing the risk profile significantly compared to vulnerabilities that require initial access or valid credentials.
To mitigate this risk, organizations must immediately upgrade their Combodo iTop instances to version 3.2.3 or later, where this authentication bypass has been resolved through improved input validation and stricter directory access controls. Until patching is complete, administrators should implement network-level restrictions such as firewall rules that limit access to the iTop web interface to trusted IP addresses only. Additionally, ensuring that the web server configuration explicitly denies direct execution of PHP files in sensitive directories can provide a temporary layer of defense. Regular security audits and penetration testing are recommended to identify similar misconfigurations across other web applications within the enterprise environment. Maintaining up-to-date software versions is essential for preserving the security posture against known vulnerabilities, as delayed patching leaves critical infrastructure exposed to well-documented exploitation techniques.