MLflow: Unauthenticated full-read SSRF in webhook delivery: _validate_webhook_url bypassed via unvalidated HTTP redirects (and DNS rebinding)

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Listed since 19 Aug 2026: known to be exploited.
• EPSS 0.10, the 95th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 14:09 UTC First seen by agentprime
2. 31 Oct 2026, 14:09 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-7gwp-5pfp-969j
• OSV: GHSA-7gwp-5pfp-969j
• github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j
• nvd.nist.gov/vuln/detail/CVE-2026-64849
• github.com/mlflow/mlflow/issues/24179
• github.com/mlflow/mlflow/pull/24258
• github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939
• github.com/advisories/GHSA-7gwp-5pfp-969j
• github.com/mlflow/mlflow
• github.com/mlflow/mlflow/releases/tag/v3.15.0
• github.com/pypa/advisory-database/tree/main/vulns/mlflow/PYSEC-2026-3687.yaml
• pypi.org/project/mlflow
• www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.