SSRF in Mlflow
CVE-2026-71211
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.003 (17.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Mlflow — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (third-party-advisory)
Frequently asked questions
- What is CVE-2026-71211?
- CVE-2026-71211 is a high-severity vulnerability in Mlflow, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.1/10. Published 2026-08-05.
- How severe is CVE-2026-71211?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2026-71211 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.