PYSEC-2026-2657

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/mlflow/PYSEC-2026-2657.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-2657
Aliases
Published
2026-07-13T14:36:45.194786Z
Modified
2026-07-13T16:32:38.663003334Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
MLFlow allows Tracing + Assessments Access
Details

In the latest version of mlflow/mlflow, when the basic-auth app is enabled, tracing and assessment endpoints are not protected by permission validators. This allows any authenticated user, including those with NO_PERMISSIONS on the experiment, to read trace information and create assessments for traces they should not have access to. This vulnerability impacts confidentiality by exposing trace metadata and integrity by allowing unauthorized creation of assessments. Deployments using mlflow server --app-name=basic-auth are affected.

References

Affected packages

PyPI / mlflow

Package

Name
mlflow
View open source insights on deps.dev
Purl
pkg:pypi/mlflow

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
3.8.1

Affected versions

0.*
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.*
1.0.0
1.1.0
1.1.1.dev0
1.2.0
1.3.0
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
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
1.20.0
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
1.30.0
1.30.1
2.*
2.0.0rc0
2.0.0
2.0.1
2.1.0
2.1.1
2.2.0
2.2.1
2.2.2
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
2.10.0
2.10.1
2.10.2
2.11.0
2.11.1
2.11.2
2.11.3
2.11.4
2.12.0
2.12.1
2.12.2
2.13.0
2.13.1
2.13.2
2.14.0rc0
2.14.0
2.14.1
2.14.2.dev0
2.14.2
2.14.3
2.15.0rc0
2.15.0
2.15.1
2.16.0
2.16.1
2.16.2
2.17.0rc0
2.17.0
2.17.1
2.17.2
2.18.0rc0
2.18.0
2.19.0rc0
2.19.0
2.20.0rc0
2.20.0
2.20.1
2.20.2
2.20.3
2.20.4
2.21.0rc0
2.21.0
2.21.1
2.21.2
2.21.3
2.22.0rc0
2.22.0
2.22.1
2.22.2
2.22.3
2.22.4
2.22.5
3.*
3.0.0rc0
3.0.0rc1
3.0.0rc2
3.0.0rc3
3.0.0
3.0.1
3.1.0rc0
3.1.0
3.1.1
3.1.2
3.1.3
3.1.4
3.2.0rc0
3.2.0
3.3.0rc0
3.3.0
3.3.1
3.3.2
3.4.0rc0
3.4.0
3.5.0rc0
3.5.0
3.5.1
3.6.0rc0
3.6.0
3.7.0rc0
3.7.0
3.8.0rc0
3.8.0
3.8.1

Database specific

source 
"https://github.com/pypa/advisory-database/blob/main/vulns/mlflow/PYSEC-2026-2657.yaml"