Directory Traversal

Overview wandb is an A CLI and library for interacting with the Weights and Biases API. Affected versions of this package are vulnerable to Directory Traversal in the File.download method of wandb/apis/public/files.py, which builds the destination with os.path.joinroot, self.name and never checks...

CVE-2026-91771

Weights & Biases wandb before 0.29.0 fails to validate the file name from server responses in the File.download function, allowing path traversal attacks. Attackers controlling the backend can supply file names with directory traversal sequences to write files outside the intended download...

CVE-2026-91771 Weights & Biases wandb before 0.29.0 Path Traversal via File Download

Weights & Biases wandb before 0.29.0 fails to validate the file name from server responses in the File.download function, allowing path traversal attacks. Attackers controlling the backend can supply file names with directory traversal sequences to write files outside the intended download...

EUVD-2026-78247

Weights & Biases wandb before 0.29.0 fails to validate the file name from server responses in the File.download function, allowing path traversal attacks. Attackers controlling the backend can supply file names with directory traversal sequences to write files outside the intended download...

CVE-2026-91771 Weights & Biases wandb before 0.29.0 Path Traversal via File Download

Weights & Biases wandb before 0.29.0 fails to validate the file name from server responses in the File.download function, allowing path traversal attacks. Attackers controlling the backend can supply file names with directory traversal sequences to write files outside the intended download...

PT-2026-91830

Weights & Biases wandb before 0.29.0 fails to validate the file name from server responses in the File.download function, allowing path traversal attacks. Attackers controlling the backend can supply file names with directory traversal sequences to write files outside the intended download...