CVE-2026-91771 Weights & Biases wandb - Path Traversal

Weights & Biases wandb < 0.29.0 contains a path traversal caused by improper validation of file names in File.download function, letting attackers controlling the backend write files outside intended directories, exploit requires attacker control of backend.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
1.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Path Traversal
Impact
File System Write, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-22

Vendor fix

Update to version 0.29.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs