CVE-2026-29059 Scanner

Windmill is a software solution frequently used by businesses and individuals for managing tasks and processes efficiently. The software is known for its modular design and flexibility, appealing to a broad range of users. It offers an array of functionalities that increase productivity by automating workflows and integrating with third-party applications. Windmill's adoption across various industries stems from its ability to handle complex automation needs while maintaining user-friendly interfaces. As businesses increasingly rely on Windmill for critical processes, ensuring its security against vulnerabilities has become paramount. This entails regular updates and security assessments to maintain trust in its integrations and operations.

This scanner detects Path Traversal vulnerabilities in the Windmill software, a critical vulnerability type. Path Traversal allows attackers to access files on the server by traversing file directories insecurely. The scanner is essential for identifying unsecured endpoints that may permit unauthorized file reads, posing significant security risks. With this capability, the scanner helps mitigate potential data breaches and sensitive information exposure. The vulnerability severity in Windmill is marked as critical due to its ability to be exploited remotely. By identifying vulnerable versions, users can take corrective actions promptly to fortify their systems.

The detected Path Traversal vulnerability in Windmill is rooted in improper input sanitization within the 'get_log_file' endpoint. This endpoint allows a filename parameter, which, when unsanitized, can be manipulated to traverse directories illegitimately. The scanner tests several HTTP paths to detect this flaw, primarily targeting areas where unauthorized file read attempts might occur. This vulnerability could be exploited without authentication, making it particularly dangerous. The scanner's robust detection mechanism ensures safe operations by alerting users to potential breaches through specific path manipulations. Addressing this vulnerability involves updating Windmill to secure versions, reinforcing the endpoint against unauthorized access.

If malicious actors exploit this vulnerability, they can gain unauthorized access to sensitive files, potentially leading to data theft and exposure. An attacker could obtain critical configuration files or user data, jeopardizing the integrity and confidentiality of the system. Such breaches might result in financial loss, system outages, or reputational damage. Moreover, attackers could leverage accessed data for further exploitation or attacks against other system components. It underlines the need for immediate attention to rectify the vulnerability and protect sensitive information. Companies using vulnerable versions must act swiftly to prevent these severe repercussions.

REFERENCES

• https://github.com/Chocapikk/Windfall
• https://chocapikk.com/posts/2026/windfall-nextcloud-flow-windmill-rce/
• https://nvd.nist.gov/vuln/detail/CVE-2026-29059