mlflow - Unvalidated Gateway Secret api_base Enables SSRF via Gateway Proxy Endpoint (CVE-2026-71211) | HOL Guard CVE

High · CVSS 7.1CVE-2026-71211GHSA-H7X2-H6G9-P789

mlflow - Unvalidated Gateway Secret api_base Enables SSRF via Gateway Proxy Endpoint

Answer in brief

CVE-2026-71211 records a High severity (CVSS 7.1) vulnerability in mlflow - Unvalidated Gateway Secret api_base Enables SSRF via Gateway Proxy Endpoint. The current sources do not mark it as known exploited. The current feed maps mlflow/mlflow (generic), mlflow (pip), mlflow (pypi). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 5, 2026Updated Aug 31, 2026Source checked Sep 20, 2026First seen by HOL Aug 5, 2026Material review Aug 31, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.1
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps mlflow/mlflow (generic), mlflow (pip), mlflow (pypi). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
mlflow/mlflowgeneric	0	Not reported
mlflowpip	>=3.13.0,<=3.15.2	Not reported
mlflowpypi	>=3.13.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for mlflow/mlflow, mlflow, mlflow.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source description

MLflow's AI Gateway accepts an auth_config.api_base value when creating a gateway secret (mlflow/server/handlers.py, _create_gateway_secret) with no validation of scheme, host, or IP range; the value is stored verbatim. The gateway proxy endpoint (mlflow/server/gateway_api.py, raw_proxy) subsequently issues an HTTP request to that stored api_base plus a caller-supplied path and returns the full response body.

Quoted source text, attributed separately from HOL analysis.