CVE-2026-53995
CVE-2026-53995 · MLflow 3.17.1 and prior Path Traversal via Trace ID API
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.8 · High · EPSS 0.6% · Public exploit · Fix available
- Published
- Updated
Stack: python
Affected products and versions
mlflow
- Versions
- ≥ 0, ≤ 3.17.1: Affected (semver)
No fix published
mlflow PyPI
- Versions
- 0.0.1
- 0.1.0
- 0.2.0
- 0.2.1
- 0.3.0
- 0.4.0
- 0.4.1
- 0.4.2
- 0.5.0
- 0.5.1
- 0.5.2
- 0.6.0
- 0.7.0
- 0.8.0
- 0.8.1
- 0.8.2
- 0.9.0
- 0.9.0.1
- 0.9.1
- 1.0.0
- 1.1.0
- 1.1.1.dev0
- 1.10.0
- 1.11.0
- 1.12.0
- 1.12.1
- 1.13
- 1.13.1
- 1.14.0
- 1.14.1
- 1.15.0
- 1.16.0
- 1.17.0
- 1.18.0
- 1.19.0
- 1.2.0
- 1.20.0
- 1.20.1
- 1.20.2
- 1.21.0
- 1.22.0
- 1.23.0
- 1.23.1
- 1.24.0
- 1.25.0
- 1.25.1
- 1.26.0
- 1.26.1
- 1.27.0
- 1.28.0
- 1.29.0
- 1.3.0
- 1.30.0
- 1.30.1
- 1.4.0
- 1.5.0
- 1.6.0
- 1.7.0
- 1.7.1
- 1.7.2
- 1.8.0
- 1.9.0
- 1.9.1
- 2.0.0
- 2.0.0rc0
- 2.0.1
- 2.1.0
- 2.1.1
- 2.10.0
- 2.10.1
- 2.10.2
- 2.11.0
- 2.11.1
- 2.11.2
- 2.11.3
- 2.11.4
- 2.11.5
- 2.12.0
- 2.12.1
- 2.12.2
- 2.13.0
- 2.13.1
- 2.13.2
- 2.13.3
- 2.14.0
- 2.14.0rc0
- 2.14.1
- 2.14.2
- 2.14.2.dev0
- 2.14.3
- 2.15.0
- 2.15.0rc0
- 2.15.1
- 2.16.0
- 2.16.1
- 2.16.2
- 2.17.0
- 2.17.0rc0
- 2.17.1
- 2.17.2
- 2.18.0
- 2.18.0rc0
- 2.19.0
- 2.19.0rc0
- 2.2.0
- 2.2.1
- 2.2.2
- 2.20.0
- 2.20.0rc0
- 2.20.1
- 2.20.2
- 2.20.3
- 2.20.4
- 2.21.0
- 2.21.0rc0
- 2.21.1
- 2.21.2
- 2.21.3
- 2.22.0
- 2.22.0rc0
- 2.22.1
- 2.22.2
- 2.22.3
- 2.22.4
- 2.22.5
- 2.3.0
- 2.3.1
- 2.3.2
- 2.4.0
- 2.4.1
- 2.4.2
- 2.5.0
- 2.6.0
- 2.7.0
- 2.7.1
- 2.8.0
- 2.8.1
- 2.9.0
- 2.9.1
- 2.9.2
- 3.0.0
- 3.0.0rc0
- 3.0.0rc1
- 3.0.0rc2
- 3.0.0rc3
- 3.0.1
- 3.1.0
- 3.1.0rc0
- 3.1.1
- 3.1.2
- 3.1.3
- 3.1.4
- 3.10.0
- 3.10.0rc0
- 3.10.1
- 3.11.0
- 3.11.0rc0
- 3.11.0rc1
- 3.11.1
- 3.12.0
- 3.12.0rc0
- 3.13.0
- 3.13.0rc0
- 3.14.0
- 3.15.0
- 3.15.1
- 3.15.2
- 3.16.0
- 3.16.1
- 3.17.0
- 3.17.1
- 3.2.0
- 3.2.0rc0
- 3.3.0
- 3.3.0rc0
- 3.3.1
- 3.3.2
- 3.4.0
- 3.4.0rc0
- 3.5.0
- 3.5.0rc0
- 3.5.1
- 3.6.0
- 3.6.0rc0
- 3.7.0
- 3.7.0rc0
- 3.8.0
- 3.8.0rc0
- 3.8.1
- 3.9.0
- 3.9.0rc0
- Affected ranges
- ECOSYSTEM: < 3.17.2
Update to 3.17.2