CVE-2026-53995 (GCVE-0-2026-53995)
Vulnerability from cvelistv5 – Published: 2026-10-19 21:05 – Updated: 2026-10-20 17:34 X_Open Source
VLAI
EPSS
VEX
Title
MLflow 3.17.1 and prior Path Traversal via Trace ID API
Summary
MLflow 3.17.1 and earlier contains a path traversal vulnerability in the FileStore tracking backend that allows unauthenticated attackers to control filesystem paths by submitting a crafted trace ID containing traversal sequences to the POST /api/3.0/mlflow/traces endpoint. Attackers can exploit FileStore.start_trace() to write trace_info.yaml, request_metadata, and tag files with attacker-controlled metadata outside the intended experiment trace directory, subject to the server process's filesystem permissions. FileStore is the default tracking backend before MLflow 3.7.0 and opt-in thereafter (the default changed to a SQLite database), so deployments in the earlier part of the affected range are vulnerable without special configuration while later ones are affected only when FileStore is explicitly selected.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 21:36 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/SaiTeja-Erukude/CVE-2026-53995… | technical-descriptionexploit |
| https://github.com/mlflow/mlflow/pull/26842 | issue-tracking |
| https://www.vulncheck.com/advisories/mlflow-path-… | third-party-advisory |
Impacted products
Date Public
2026-10-17 00:00
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