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Vulnerabilities

Vulnerability · CVE-2026-53995

Directory Traversal

Published Oct 19, 2026 · catalog updated Oct 20, 2026 · Directory Traversal

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-53995. EPSS is 0.63%. Act only if a listed version of Directory Traversal is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Directory Traversal).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.63%
Remediation
Version ranges on file
Affected products
package pip · stated named in the record

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • package pipversion unspecified
  • stated named in the record<= 3.17.1

How to fix CVE-2026-53995

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-53995. EPSS is 0.63%. Act only if a listed version of Directory Traversal is installed.

Which versions are affected?

Compare what you have installed with named in the record <= 3.17.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.63%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 19, 2026 · NIST NVD

    Detected

    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-control

  2. Oct 20, 2026 · NIST NVD

    Updated

    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-control

Sources

  • CVE.orgVulnerability recordCVE-2026-53995

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-53995

    30-day exploitation probability 0.63%

    first.org
  • NIST NVDVulnerability recordCVE-2026-53995

    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. Attac

    nvd.nist.gov
  • Snyk Vulnerability DatabasePackage advisorySNYK-PYTHON-MLFLOW-21460702

    Directory Traversal

    security.snyk.io

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • Snyk Vulnerability DatabaseOct 25, 2026
  • CVE.orgOct 21, 2026
  • NIST NVDOct 21, 2026