CVE-2026-64849

CVE Enrichment

CVSS: 9.3 CRITICAL
EPSS: 9.84%
EPSS Percentile: 95.46%
CISA KEV: YES — Known Exploited Vulnerability

Description

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: security-advisories@github.com
Published: 18-Aug-2026 05:17
Last Modified: 05-Oct-2026 20:35
EPSS Date: 2026-10-12
CWE: CWE-918

CVSS Vector


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

CISA KEV Details

Date Added: 2026-08-19
Remediation Due: 2026-09-02
Known Ransomware Campaign Use: Unknown
Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notes: https://github.com/mlflow/mlflow/pull/24258 ; https://github.com/mlflow/mlflow/issues/24179 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-64849

Affected Products / Versions

lfprojects / mlflow
Version / affected range: * · from (inclusive) 3.3.0 · before (exclusive) 3.15.0
cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*

References

Last enrichment sync: 12-Oct-2026 22:18
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

CVE-2026-64849 Recorded Future Identifies 73 High-Impact Vulnerabilities in August, 70 Actively Exploited

CVE (71)

Malware (4)

Threat Actors (1)

Vendors (22)

Products (18)

Tools (7)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.