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MLflow EUVDEUVD-2026-85410

| CVE-2026-96775 HIGH
Deserialization of Untrusted Data (CWE-502)
2026-09-23 certcc GHSA-q5f3-5gj6-hmj7
8.8
CVSS 3.1 · Vendor: certcc
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Severity by source

Vendor (certcc) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Attacker needs no privileges but victim must load a crafted model (UI:R); pickle execution yields full code execution on the loading host, so C/I/A all High.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Red Hat
8.8 HIGH
qualitative

Primary rating from Vendor (certcc).

CVSS VectorVendor: certcc

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Metadata Corrected
Sep 23, 2026 - 19:40 vuln.today
tag: Python added
Analysis Generated
Sep 23, 2026 - 19:34 vuln.today
CVE Published
Sep 23, 2026 - 16:28 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 23, 2026 - 16:28 cve.org
HIGH 8.8

DescriptionCVE.org

MLflow's dspy flavor, versions >= 2.0, applies the MLFLOW_ALLOW_PICKLE_DESERIALIZATION=False security control only when the model_path ends in .pkl, which allows a remote attacker to execute arbitrary code via a crafted MLmodel artifact.

AnalysisAI

Arbitrary code execution in MLflow (versions 2.0 and later) via the dspy flavor, where an attacker-crafted MLflow model artifact causes remote code execution when loaded by a victim. The vulnerability arises because the MLFLOW_ALLOW_PICKLE_DESERIALIZATION=False safety control is enforced only when the model_path ends in '.pkl'; any other path (or extension) silently skips the check and unpickles attacker-controlled data. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Vulnerability AssessmentAI

Exploitation Exploitation requires a victim (user or automated pipeline) to load an attacker-crafted MLflow model that uses the 'dspy' flavor (MLflow >= 2.0), where the model_path is set to any value NOT ending in '.pkl'. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuine high-priority vulnerability where the CVSS 8.8 rating is well-justified by the technical impact rather than being an inflated score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch was identified at time of analysis, so remediation must center on preventing untrusted artifacts from reaching a deserialization path until an upstream fix is available; monitor CERT/CC VU#369093 (https://kb.cert.org/vuls/id/369093) and the MLflow project for a patched release. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all MLflow instances running version 2.0 and later, and ensure that model loading only occurs from trusted sources; if the dspy flavor is not required, disable it, and enforce strict path validation to require model_path to end with '.pkl' when loading any model. …

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EUVD-2026-85410 vulnerability details – vuln.today

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