CVE-2026-52610 in reportico-web
Summary
by MITRE • 08/18/2026
An arbitrary file write/directory traversal vulnerability in reportico-web <= 8.1.0 allows remote attackers to create or overwrite files anywhere on the filesystem subject to the permissions of the web user by specifying a filename in the "saveTemplate" parameter in conjuction with "execute_mode=PREPARE" parameter in the "run.php" endpoint.
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Analysis
by VulDB Data Team • 08/18/2026
The vulnerability identified within Reportico versions 8.1.0 and earlier represents a critical security flaw classified as an arbitrary file write or directory traversal issue. This defect resides specifically within the run.php endpoint, which serves as a primary interface for executing report generation tasks in the web application environment. The root cause of this vulnerability lies in insufficient input validation regarding the saveTemplate parameter. When a remote attacker constructs a malicious request that includes both execute_mode set to PREPARE and a carefully crafted filename in the saveTemplate field, they can manipulate the underlying file system operations. By utilizing standard directory traversal sequences such as dot-dot-slash characters, an adversary can break out of the intended application directories and specify arbitrary paths on the server's operating system. This lack of sanitization allows the attacker to dictate exactly where data is written, bypassing any logical boundaries designed by the developers to contain file operations within specific safe zones.
From a technical perspective, this flaw exploits the way the web server processes user-supplied input before passing it to internal functions responsible for writing template files or configuration artifacts. Because the application does not adequately validate whether the provided path is relative and confined to an allowed directory structure, it trusts the attacker's input implicitly. This behavior aligns with Common Weakness Enumeration category CWE-434, which describes the unrestricted upload of file with dangerous type, although in this specific context, it manifests more accurately as CWE-22: Improper Limitation of a Pathname to a Restricted Directory or CWE-73: External Control of File Name or Path. The ability to write files anywhere on the filesystem is particularly severe because it grants the attacker significant control over the server's state. If the web application runs with elevated privileges, such as root or administrator rights, the impact escalates from simple data corruption to complete system compromise. Even if running under a restricted user account, an attacker can often leverage this capability to place malicious scripts in publicly accessible directories, leading to remote code execution through subsequent requests that trigger those files.
The operational impact of this vulnerability is profound and multifaceted. Initially, it allows for the defacement or corruption of existing application files if the attacker targets specific configuration or source code locations. More critically, it enables the deployment of web shells or backdoors in directories where they can be executed by the web server. This effectively transforms a simple file write flaw into a full remote code execution vector. Furthermore, depending on the hosting environment and operating system configurations, an attacker might use this access to modify critical system files, install persistent malware, or pivot laterally within the network if other services are accessible from that user context. The presence of such vulnerabilities significantly undermines the integrity and availability guarantees provided by secure software development practices. It also poses a severe risk to data confidentiality, as attackers could potentially overwrite sensitive configuration files to redirect database connections or log outputs to attacker-controlled locations for exfiltration purposes.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The most effective solution is to upgrade Reportico to version 8.1.1 or later, where this specific input validation flaw has been addressed by the vendor. For organizations unable to patch immediately due to compatibility constraints, a robust workaround involves implementing strict allowlisting for file paths on the web server level using tools like ModSecurity or similar Web Application Firewalls that can detect and block directory traversal patterns in query parameters. Additionally, developers should enforce principle of least privilege by ensuring the web user account has minimal permissions, restricting write access only to specific temporary directories necessary for operation. Input validation must be strengthened at the application layer to reject any saveTemplate values containing relative path sequences or absolute paths outside the expected base directory. Regular security audits and static code analysis tools configured to detect CWE-22 patterns can help identify similar weaknesses in other parts of the codebase before they are exploited in production environments.
This vulnerability is often associated with attack techniques documented in the MITRE ATT&CK framework, specifically T1505.003: Web Shell, as attackers typically leverage file write capabilities to establish persistent access mechanisms. It also relates to T1204.002: Malicious File, where malicious content is written to disk for execution or further exploitation. Understanding these mappings helps security teams prioritize response efforts and monitor for indicators of compromise that align with these specific tactics. By treating arbitrary file write vulnerabilities as high-severity issues requiring immediate attention, organizations can prevent the initial foothold that leads to broader system compromises. The integration of automated testing in continuous integration pipelines focusing on path traversal checks is recommended to ensure such flaws do not re-emerge during future development cycles or updates.