Vulnerability · Published Aug 5, 2026 · Assigned by TuranSec

CVE-2026-71211mlflow - Unvalidated Gateway Secret api_base Enables SSRF via Gateway Proxy Endpoint

High 7.1

In plain English

A high-severity server-side request forgery in mlflow from mlflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.3%top 78.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	mlflow	no fix listed	GHSA-h7x2-h6g9-p789
PyPI	mlflow	no fix listed	PYSEC-2026-3865

Affected products (as reported)

Vendor	Product	Versions
mlflow	mlflow	0 – through 3.14.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

References

https://github.com/mlflow/mlflow/tree/v3.14.0/mlflow third-party-advisory