CVEvulnerability
CVE-2026-91771
8.7 HIGH
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-15
- Last modified
- 2026-09-24
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 8.7 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-22
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.
Related
Weakness · CWE (1)
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
References
- https://github.com/wandb/wandb github.com
- https://github.com/wandb/wandb/blob/v0.27.2/wandb/apis/public/files.py#L319-L347 github.com
- https://github.com/wandb/wandb/commit/e52558f3a6a94ea816af74969a13a35e5904cad6 github.com
- https://github.com/wandb/wandb/issues/12592 github.com
- https://github.com/wandb/wandb/releases/tag/v0.29.0 github.com
- https://www.vulncheck.com/advisories/weights-biases-wandb-before-0.29.0-path-traversal-via-file-download www.vulncheck.com