CVE-2026-31250 (GCVE-0-2026-31250)

Vulnerability from cvelistv5 – Published: 2026-05-11 00:00 – Updated: 2026-05-12 19:05
VLAI
Summary
CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its average_model.py model averaging tool. The script loads PyTorch checkpoint files (epoch_*.pt) for model averaging using torch.load() without enabling the weights_only=True security parameter. This allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by providing malicious checkpoint files within a directory. When a victim uses the tool to average models from this directory, arbitrary code is executed on the victim's system.
Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 19:05 UTC
CWE
  • n/a
  • CWE-502 - Deserialization of Untrusted Data
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2314 records in the last 180 days details
References
Show details on NVD website
To clipboard 

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