CVE-2026-91771 | BDVDB-2026-374464 Detail
wandbwandb
Description#
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 directory, potentially enabling code execution through modification of shell startup files or Python import paths.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References#
- https://github.com/wandb/wandb/issues/12592
- https://github.com/wandb/wandb/commit/e52558f3a6a94ea816af74969a13a35e5904cad6
- https://github.com/wandb/wandb/releases/tag/v0.29.0
- https://github.com/wandb/wandb/blob/v0.27.2/wandb/apis/public/files.py#L319-L347
- https://github.com/wandb/wandb
- https://www.vulncheck.com/advisories/weights-biases-wandb-before-0.29.0-path-traversal-via-file-download
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.