EUVD-2026-85421
GHSA-2qmw-5xhm-qq5w
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable via registry/artifact store with low-priv access (PR:L), but a victim/pipeline must load the crafted artifact so UI:R; successful deserialization gives full RCE (C:H/I:H/A:H).
Primary rating from Vendor (certcc).
CVSS VectorVendor: certcc
Lifecycle Timeline
5DescriptionCVE.org
MLflow's statsmodel flavor, versions 2.1.0 to 3.14.0, omits the MLFLOW_ALLOW_PICKLE_DESERIALIZATION=False security control entirely in _load_model(), which allows a remote attacker to execute arbitrary code via a crafted MLmodel artifact.
AnalysisAI
Remote code execution in MLflow's statsmodel flavor (versions 2.1.0 through 3.14.0) occurs because _load_model() omits the MLFLOW_ALLOW_PICKLE_DESERIALIZATION=False safeguard, allowing a crafted MLmodel artifact to trigger unsafe pickle deserialization (CWE-502). An authenticated low-privileged attacker (PR:L) who can register or supply a malicious artifact to the model registry or artifact store can achieve arbitrary code execution when a victim's pipeline or serving process loads it, although the victim must load the untrusted artifact (UI:R). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a target using MLflow's statsmodel model flavor (versions 2.1.0 through 3.14.0) load a crafted MLmodel artifact; because _load_model() omits the MLFLOW_ALLOW_PICKLE_DESERIALIZATION=False guard, even users relying on that safe-mode control are exposed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, base 8.8 HIGH) describes a network-reachable, low-complexity deserialization flaw requiring only low privileges and yielding full confidentiality/integrity/availability compromise - consistent with CWE-502 pickle RCE. … 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; consult CERT/CC VU#369093 for updates. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all MLflow deployments using the statsmodel flavor between versions 2.1.0 and 3.14.0, and enforce the environment variable MLFLOW_ALLOW_PICKLE_DESERIALIZATION=False across all model loading and serving processes; restrict write access to the model registry and artifact stores to only trusted, authenticated users. …
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