CVE-2026-53995 MLflow - Path Traversal

MLflow <= 3.17.1 contains a path traversal caused by crafted trace ID in FileStore tracking backend, letting unauthenticated attackers write files outside intended directories, exploit requires use of FileStore backend.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
View the NVD record ↗

Details

Type
Path Traversal
Impact
Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Published
19 October 2026
Updated
20 October 2026
Weakness
CWE-22

Vendor fix

Update to MLflow 3.7.0 or later where FileStore is not the default or apply latest available version.

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

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