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Dossier · Vulnerability

Actively exploited · CISA KEV · NVD published 2026-08-17

CVE-2026-64849

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Starting in 3.3.0 and prior to 3.15.0, the unauthenticated POST /api/2.0/mlflow/webhooks/{id}/test endpoint calls _validate_webhook_url() in mlflow/utils/validation.py only for the original URL while mlflow/webhooks/delivery.py follows redirects and re-resolves the hostname without pinning the validated address, allowing attackers to reach internal or cloud metadata services and receive response_status and response_body. This issue is fixed in version 3.15.0.

  1. First PoC
  2. same day →KEV

Signals

Exploited in the wild
Yesadded 2026-08-19 · due 2026-09-02. An observation, not a forecast.
EPSS · 30-day forecast
10%Chance of exploitation in the next 30 days, 96th percentile of all CVEs. A forecast; KEV outranks it.
CVSS · NVD · CRITICAL
9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Internet exposure
not stated by sourcesNo exposure census on this CVE's dispatches.

Exploits

5 known · links only

GitHub PoCs · by trust, then stars4

  1. BiuTrap/CVE-2026-64849 ↗Trust ok 100

    CVE-2026-64849 PoC

    ★ 0 · created 2026-08-19

  2. codeb0ssx/CVE-2026-64849-PoC ↗Trust ok 100

    ★ 0 · created 2026-08-18

  3. isaca0315/CVE-2026-64849-poc-lab ↗Trust ok 100

    este laboratorio puede estar bien o mal preguntale a la IA estoy probando pero debe funcionar hahahah

    ★ 0 · created 2026-09-06

  4. zavisco/CVE-2026-64849.yaml ↗Trust ok 100

    ★ 0 · created 2026-08-19

Fake proof-of-concept repositories have been used to deliver malware to the researchers who run them. The trust verdict is our engine's heuristic over the repository (account age, what it ships, how its stars arrived); it is a reason to read the code first, not a finding about its author.

Nuclei1

  1. MLflow Webhook SSRF - Unauthenticated Full-Read via Redirect Bypass ↗

    MLflow > 3.15.0 contains an information disclosure vulnerability caused by improper validation of webhook URLs allowing attackers to reach internal or cloud metadata services and obtain response details, exploit requires unauthenticated access to the webhook test endpoint.

    yaml · seen 2026-10-18

On the wire

1 dispatch
  1. [KEV] CVE-2026-64849: MLflow Server-Side Request Forgery VulnerabilityKEV

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