CVE-2026-31252 (GCVE-0-2026-31252)

Vulnerability from cvelistv5 – Published: 2026-05-11 00:00 – Updated: 2026-05-12 19:27
VLAI
Summary
CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its model loading component. The framework uses torch.load() to load model weight files (e.g., llm.pt, flow.pt, hift.pt) without enabling the security-restrictive weights_only=True parameter. This allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by providing a malicious model directory containing specially crafted model files. When a victim starts the CosyVoice Web UI pointing to this directory, arbitrary code is executed on the victim's system during the model loading process.
Severity
5.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 19:24 UTC
CWE
  • n/a
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2261 records in the last 180 days details
References
Show details on NVD website
To clipboard 

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