CVE-2025-8110 Scanner

Gogs is a self-hosted Git service often used by developers and organizations to manage and host Git repositories. It is favored for its lightweight nature and ease of installation on various platforms, making it accessible for developers looking for an easy-to-manage code version control system. The software is typically utilized in environments where data privacy and control are prioritized, such as internal networks of companies. Users can clone, push, and pull their repositories while enjoying a user-friendly interface. Gogs supports collaboration with various levels of access control, enabling efficient team management and workflow. It also integrates well with CI/CD pipelines, facilitating automated testing and deployment processes.

Remote Code Execution (RCE) is a critical vulnerability type where an attacker can execute arbitrary commands on a target machine. This occurs when a flaw allows maliciously crafted inputs to be executed as code without proper validation or sanitization. Exploitation of this vulnerability can lead to unauthorized access, data breaches, or complete takeover of the affected system. In the context of Gogs, authenticated users can exploit this by committing a symbolic link to sensitive files, which results in overwriting essential files. This vulnerability is particularly dangerous as it enables attackers to bypass typical security controls and directly interact with the system's file structure. Ensuring robust input validation and access controls is crucial in mitigating such vulnerabilities.

This vulnerability arises due to improper handling of symbolic links in the Gogs PutContents API. The problem manifests when the API is allowed to write to file paths without verifying if these targets are symlinks pointing outside the designated repository. As a result, attackers can craft a payload that replaces critical files with symlinks pointing to sensitive system locations. When executed, these links can overwrite key files or cause unintended behavior, potentially opening backdoors for further exploitation. The flaw is exacerbated by the lack of a fix as of December 2025, despite ongoing active exploitation attempts. It highlights the importance of rigorous symbolic link management and validation processes in application development.

The exploitation of this RCE vulnerability could result in far-reaching consequences, potentially affecting data integrity, confidentiality, and system availability. Unauthorized individuals might gain the ability to manipulate or destroy critical data, jeopardizing operational capabilities and data trust. Given the nature of RCE vulnerabilities, full system compromise, including control over network operations and access to sensitive information, is a prevailing risk. The Gogs vulnerability may also serve as an entry point for additional attacks or lateral movement within an organization's network, increasing exposure. Organizations must address such vulnerabilities promptly to safeguard their systems from these potential threats.

REFERENCES

• https://www.wiz.io/blog/wiz-research-gogs-cve-2025-8110-rce-exploit
• https://thehackernews.com/2025/12/unpatched-gogs-zero-day-exploited.html
• https://github.com/advisories/ghsa-mq8m-42gh-wq7r
• https://nvd.nist.gov/vuln/detail/CVE-2025-8110