Is CVE-2026-109361 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-109361?

CVE-2026-109361 has a CVSS v3 severity of HIGH (7.3).

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CVE-2026-109361

Description

MONAI 1.2.0 before 1.6.1 contains an insecure deserialization vulnerability in nnUNetV2Runner that unpickles the postprocessing_file path read from inference_information.json without confining it to the results directory. Attackers who can modify inference_information.json can point it at a malicious pickle elsewhere on the filesystem to execute code when predict_ensemble_postprocessing runs.