CVE-2026-64849

CVSS 9.3 · CRITICAL
Exploited in the wild
Remediation overdue by 23 days
EPSS p0
Lower risk — in the top 100% least-likely-to-be-exploited CVEs.
No patch reference
No patch/mitigation in references

Published 8/17/2026 · updated 8/17/2026 · CWE-918

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Summary

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. 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.

CVSS 9.3 — CRITICAL

9.3 / 10
  • AV: Network
  • AC: Low complexity
  • PR: No privileges
  • UI: No user interaction
  • S: Scope changed
  • C: Confidentiality: High
  • I: Integrity: Low
  • A: Availability: None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

EPSS exploitation probability

0.0%

Percentile p0 — Lower risk — in the top 100% least-likely-to-be-exploited CVEs.

Timeline

  1. Aug 17, 2026 · Disclosed / published in NVD
  2. Aug 19, 2026 · Added to CISA KEV catalog
  3. Sep 2, 2026 · CISA remediation deadline

Intel sources

Which upstream feeds returned data for this CVE, and when they were last fetched.

  • NVD· 37 days ago
  • CVE.org· 37 days ago
  • FIRST EPSS· 37 days ago
  • CISA KEV· 12 days ago
  • OSV· 37 days ago

Listed in CISA KEV

Added 2026-08-19 · Remediation overdue by 23 days.

References

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