CVE-2026-61504

The vulnerability in Rejetto HFS versions 3.0.0 through 3.2.0 derives the session-cookie signing key from the non-cryptographic Math.random() generator and discloses its outputs to unauthenticated clients during login. A remote attacker can collect a few login responses, reconstruct the generator's state, recover the signing key, and forge a valid administrator session cookie, leading to full administrative access and remote code execution via the server_code configuration feature.

A vulnerability in Rejetto HFS versions 3.0.0 through 3.2.0 allows a remote unauthenticated attacker to read JSON files outside shared folders by manipulating the 'lang' query parameter. Exploitation is limited to files with a narrow naming and format pattern, reducing practical impact.

Rejetto HFS versions 3.0.0 through 3.2.0 return observably different responses from its login endpoint depending on whether the submitted username exists. A remote unauthenticated attacker can use this to confirm valid account names, including the default admin account.

A vulnerability in Rejetto HFS versions 3.0.0 through 3.2.0 allows state-changing API requests via the GET method, which is exempt from anti-CSRF header checks. A remote attacker can perform administrative actions including account creation and configuration changes leading to code execution.

A vulnerability in Rejetto HFS versions 3.0.0 through 3.2.0 renders log entries in the administration panel as HTML without sanitization. A remote unauthenticated attacker can submit a failed login with a crafted username that is written to the error log and executes JavaScript in an administrator's browser when the logs are viewed.