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Fencer Vulns
critical 9.1

CVE-2023-6014 json

MLflow Authentication Bypass

published 2023-11-16 2 y ago modified 2026-07-01 4 mo ago also BIT-mlflow-2023-6014 , EUVD-2023-2882 , GHSA-4qq5-mxxx-m6gg , PYSEC-2026-415

cvss
9.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

An attacker is able to arbitrarily create an account in MLflow bypassing any authentication requirment.

Patch / fix

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

1.17% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.com https://huntr.com/bounties/3e64df69-ddc2-463e-9809-d07c24dc1de4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
GitHub 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
pypi mlflow
<2.8.0
2.8.0
bitnami mlflow — no fix listed

Affected products

  • mlflow mlflow/mlflow
  • mlflow mlflow

Classification

Weakness
  • CWE-598 Use of HTTP Request With Sensitive Query String

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.