CVE-2026-31249

Published May 11, 2026 CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
Description
CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its make_parquet_list.py data processing tool. The script loads PyTorch .pt files (utterance embeddings, speaker embeddings, speech tokens) 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 .pt files within a data directory. When a victim processes this directory using the tool, arbitrary code is executed on the victim's system.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Insecure Deserialization in CosyVoice make_parquet_list.py Allows Arbitrary Code Execution
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Funaudiollm
Funaudiollm cosyvoice
Vendors & Products Funaudiollm
Funaudiollm cosyvoice
Type Values Removed Values Added
Title Insecure Deserialization in CosyVoice make_parquet_list.py Allows Arbitrary Code Execution
Weaknesses CWE-502
Type Values Removed Values Added
Description CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its make_parquet_list.py data processing tool. The script loads PyTorch .pt files (utterance embeddings, speaker embeddings, speech tokens) 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 .pt files within a data directory. When a victim processes this directory using the tool, arbitrary code is executed on the victim's system.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 12, 2026, 5:52 PM
Reserved
Mar 9, 2026, 12:00 AM
Status
Deferred
Published
May 11, 2026, 5:16 PM
Modified
Jun 17, 2026, 10:33 AM