Vulnerability Details CVE-2026-4035
A vulnerability in mlflow/mlflow versions prior to 3.11.0 allows for the resolution of environment variables in AI Gateway secrets, which can be exploited to exfiltrate sensitive server-side environment credentials to an attacker-controlled endpoint. This issue arises because the `api_key` field in gateway secrets can accept `$ENV_VAR` references, which are resolved against the MLflow server's environment during runtime. The resolved secrets are then sent in provider authentication headers to the configured upstream `api_base`. This vulnerability can be exploited by low-privileged authenticated users in basic-auth deployments or by unauthenticated users in default deployments without `basic-auth`. The impact includes potential leakage of sensitive credentials such as cloud artifact credentials (`AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`), which could lead to artifact poisoning and cross-boundary code execution in downstream environments. The issue is fixed in version 3.11.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 25.8%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-4035
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cpe:2.3:a:lfprojects:mlflow:-
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cpe:2.3:a:lfprojects:mlflow:0.2.0
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cpe:2.3:a:lfprojects:mlflow:0.2.1
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cpe:2.3:a:lfprojects:mlflow:0.3.0
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cpe:2.3:a:lfprojects:mlflow:0.4.0
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cpe:2.3:a:lfprojects:mlflow:0.4.1
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cpe:2.3:a:lfprojects:mlflow:0.4.2
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cpe:2.3:a:lfprojects:mlflow:0.5.0
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cpe:2.3:a:lfprojects:mlflow:0.5.1
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cpe:2.3:a:lfprojects:mlflow:0.5.2
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cpe:2.3:a:lfprojects:mlflow:0.6.0
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cpe:2.3:a:lfprojects:mlflow:0.7
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cpe:2.3:a:lfprojects:mlflow:0.7.0
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cpe:2.3:a:lfprojects:mlflow:0.8.0
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cpe:2.3:a:lfprojects:mlflow:0.8.1
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cpe:2.3:a:lfprojects:mlflow:0.8.2
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cpe:2.3:a:lfprojects:mlflow:0.9.0
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cpe:2.3:a:lfprojects:mlflow:0.9.1
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cpe:2.3:a:lfprojects:mlflow:1.0.0
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cpe:2.3:a:lfprojects:mlflow:1.1.0
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cpe:2.3:a:lfprojects:mlflow:1.10.0
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cpe:2.3:a:lfprojects:mlflow:1.11.0
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cpe:2.3:a:lfprojects:mlflow:1.12.0
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cpe:2.3:a:lfprojects:mlflow:1.12.1
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cpe:2.3:a:lfprojects:mlflow:1.13.0
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cpe:2.3:a:lfprojects:mlflow:1.13.1
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cpe:2.3:a:lfprojects:mlflow:1.14.0
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cpe:2.3:a:lfprojects:mlflow:1.14.1
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cpe:2.3:a:lfprojects:mlflow:1.15.0
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cpe:2.3:a:lfprojects:mlflow:1.16.0
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cpe:2.3:a:lfprojects:mlflow:1.17.0
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cpe:2.3:a:lfprojects:mlflow:1.18.0
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cpe:2.3:a:lfprojects:mlflow:1.19.0
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cpe:2.3:a:lfprojects:mlflow:1.2.0
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cpe:2.3:a:lfprojects:mlflow:1.20.0
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cpe:2.3:a:lfprojects:mlflow:1.20.1
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cpe:2.3:a:lfprojects:mlflow:1.20.2
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cpe:2.3:a:lfprojects:mlflow:1.21.0
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cpe:2.3:a:lfprojects:mlflow:1.22.0
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cpe:2.3:a:lfprojects:mlflow:1.23.0
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cpe:2.3:a:lfprojects:mlflow:1.23.1
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cpe:2.3:a:lfprojects:mlflow:1.24.0
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cpe:2.3:a:lfprojects:mlflow:1.25.0
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cpe:2.3:a:lfprojects:mlflow:1.25.1
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cpe:2.3:a:lfprojects:mlflow:1.26.0
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cpe:2.3:a:lfprojects:mlflow:1.26.1
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cpe:2.3:a:lfprojects:mlflow:1.27.0
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cpe:2.3:a:lfprojects:mlflow:1.28.0
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cpe:2.3:a:lfprojects:mlflow:1.29.0
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cpe:2.3:a:lfprojects:mlflow:1.3.0
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cpe:2.3:a:lfprojects:mlflow:1.30.0
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cpe:2.3:a:lfprojects:mlflow:1.4.0
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cpe:2.3:a:lfprojects:mlflow:1.5.0
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cpe:2.3:a:lfprojects:mlflow:1.6.0
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cpe:2.3:a:lfprojects:mlflow:1.7.0
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cpe:2.3:a:lfprojects:mlflow:1.7.1
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cpe:2.3:a:lfprojects:mlflow:1.7.2
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cpe:2.3:a:lfprojects:mlflow:1.8.0
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cpe:2.3:a:lfprojects:mlflow:1.9.0
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cpe:2.3:a:lfprojects:mlflow:1.9.1
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cpe:2.3:a:lfprojects:mlflow:2.0.0
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cpe:2.3:a:lfprojects:mlflow:2.0.1
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cpe:2.3:a:lfprojects:mlflow:2.1.0
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cpe:2.3:a:lfprojects:mlflow:2.1.1
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cpe:2.3:a:lfprojects:mlflow:2.10.0
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cpe:2.3:a:lfprojects:mlflow:2.10.1
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cpe:2.3:a:lfprojects:mlflow:2.10.2
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cpe:2.3:a:lfprojects:mlflow:2.11.0
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cpe:2.3:a:lfprojects:mlflow:2.11.1
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cpe:2.3:a:lfprojects:mlflow:2.11.2
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cpe:2.3:a:lfprojects:mlflow:2.11.3
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cpe:2.3:a:lfprojects:mlflow:2.12.1
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cpe:2.3:a:lfprojects:mlflow:2.12.2
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cpe:2.3:a:lfprojects:mlflow:2.13.0
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cpe:2.3:a:lfprojects:mlflow:2.13.1
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cpe:2.3:a:lfprojects:mlflow:2.13.2
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cpe:2.3:a:lfprojects:mlflow:2.14.0
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cpe:2.3:a:lfprojects:mlflow:2.14.1
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cpe:2.3:a:lfprojects:mlflow:2.14.2
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cpe:2.3:a:lfprojects:mlflow:2.14.3
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cpe:2.3:a:lfprojects:mlflow:2.15.0
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cpe:2.3:a:lfprojects:mlflow:2.15.1
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cpe:2.3:a:lfprojects:mlflow:2.16.0
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cpe:2.3:a:lfprojects:mlflow:2.16.1
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cpe:2.3:a:lfprojects:mlflow:2.16.2
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cpe:2.3:a:lfprojects:mlflow:2.17.0
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cpe:2.3:a:lfprojects:mlflow:2.17.1
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cpe:2.3:a:lfprojects:mlflow:2.17.2
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cpe:2.3:a:lfprojects:mlflow:2.18.0
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cpe:2.3:a:lfprojects:mlflow:2.19.0
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cpe:2.3:a:lfprojects:mlflow:2.2.0
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cpe:2.3:a:lfprojects:mlflow:2.2.1
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cpe:2.3:a:lfprojects:mlflow:2.2.2
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cpe:2.3:a:lfprojects:mlflow:2.20.0
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cpe:2.3:a:lfprojects:mlflow:2.20.1
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cpe:2.3:a:lfprojects:mlflow:2.20.2
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cpe:2.3:a:lfprojects:mlflow:2.20.3
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cpe:2.3:a:lfprojects:mlflow:2.20.4
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cpe:2.3:a:lfprojects:mlflow:2.21.0
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cpe:2.3:a:lfprojects:mlflow:2.21.1
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cpe:2.3:a:lfprojects:mlflow:2.21.2
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cpe:2.3:a:lfprojects:mlflow:2.21.3
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cpe:2.3:a:lfprojects:mlflow:2.22.0
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cpe:2.3:a:lfprojects:mlflow:2.22.1
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cpe:2.3:a:lfprojects:mlflow:2.22.2
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cpe:2.3:a:lfprojects:mlflow:2.3.0
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cpe:2.3:a:lfprojects:mlflow:2.3.1
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cpe:2.3:a:lfprojects:mlflow:2.3.2
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cpe:2.3:a:lfprojects:mlflow:2.4.0
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cpe:2.3:a:lfprojects:mlflow:2.4.1
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cpe:2.3:a:lfprojects:mlflow:2.4.2
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cpe:2.3:a:lfprojects:mlflow:2.5.0
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cpe:2.3:a:lfprojects:mlflow:2.6.0
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cpe:2.3:a:lfprojects:mlflow:2.7.0
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cpe:2.3:a:lfprojects:mlflow:2.7.1
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cpe:2.3:a:lfprojects:mlflow:2.8.0
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cpe:2.3:a:lfprojects:mlflow:2.8.1
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cpe:2.3:a:lfprojects:mlflow:2.9.0
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cpe:2.3:a:lfprojects:mlflow:2.9.1
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cpe:2.3:a:lfprojects:mlflow:2.9.2
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cpe:2.3:a:lfprojects:mlflow:3.0.0
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cpe:2.3:a:lfprojects:mlflow:3.0.1
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cpe:2.3:a:lfprojects:mlflow:3.1.0
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cpe:2.3:a:lfprojects:mlflow:3.1.1
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cpe:2.3:a:lfprojects:mlflow:3.1.2
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cpe:2.3:a:lfprojects:mlflow:3.1.3
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cpe:2.3:a:lfprojects:mlflow:3.1.4
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cpe:2.3:a:lfprojects:mlflow:3.10.0
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cpe:2.3:a:lfprojects:mlflow:3.10.1
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cpe:2.3:a:lfprojects:mlflow:3.2.0
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cpe:2.3:a:lfprojects:mlflow:3.3.0
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cpe:2.3:a:lfprojects:mlflow:3.3.1
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cpe:2.3:a:lfprojects:mlflow:3.3.2
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cpe:2.3:a:lfprojects:mlflow:3.4.0
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cpe:2.3:a:lfprojects:mlflow:3.5.0
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cpe:2.3:a:lfprojects:mlflow:3.5.1
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cpe:2.3:a:lfprojects:mlflow:3.6.0
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cpe:2.3:a:lfprojects:mlflow:3.7.0
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cpe:2.3:a:lfprojects:mlflow:3.8.0
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cpe:2.3:a:lfprojects:mlflow:3.8.1
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cpe:2.3:a:lfprojects:mlflow:3.9.0