CVE-2026-40515: Permission Bypass in OpenHarness

The primary impact of CVE-2026-40515 is the unauthorized disclosure of sensitive files. An attacker exploiting this vulnerability can bypass configured path restrictions and execute tools like grep and glob with access to root directories that should be protected. This could lead to the exposure of configuration files, key material (e.g., API keys, passwords), and other sensitive data stored locally. The blast radius depends on the sensitivity of the files accessible within the root directories. While the vulnerability doesn't directly lead to remote code execution, the compromised data could be leveraged for further attacks, such as credential theft or privilege escalation if sensitive credentials are exposed. The incomplete path normalization resembles weaknesses seen in other privilege escalation scenarios where path traversal vulnerabilities are exploited.

1. Reserved2026-04-13
2. Published2026-04-17
3. Modified2026-04-20
4. EPSS updated2026-04-25

The recommended mitigation for CVE-2026-40515 is to immediately upgrade OpenHarness to version bd4df81f634f8c7cddcc3fdf7f561a13dcbf03ae or later. If upgrading is not immediately feasible, consider implementing stricter path restrictions within the OpenHarness configuration to limit the scope of potential file access. While not a direct mitigation, reviewing and hardening the permissions of sensitive files and directories can reduce the potential impact of a successful exploit. There are no specific WAF or proxy rules that can directly address this vulnerability, as it resides within the application's logic. After upgrading, verify the fix by attempting to execute grep or glob commands with unauthorized paths to ensure the permission checks are functioning correctly.