Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
Primary rating from Vendor (certcc).
CVSS VectorVendor: certcc
Lifecycle Timeline
4DescriptionCVE.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
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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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-85410
GHSA-q5f3-5gj6-hmj7