CVE-2026-31232

Published May 12, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
The CosyVoice project thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its model loading process. When loading model files (.pt) from a user-specified directory (via the --model_dir argument), the code uses torch.load() without 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 maliciously crafted model directory containing .pt files with embedded pickle payloads. When a victim loads this directory using CosyVoice's web interface, the malicious payload is executed, leading to remote code execution 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
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Insecure Deserialization in CosyVoice Model Loading Enables Remote Code Execution
Type Values Removed Values Added
Weaknesses CWE-502
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

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 Model Loading Enables Remote Code Execution
Type Values Removed Values Added
Description The CosyVoice project thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its model loading process. When loading model files (.pt) from a user-specified directory (via the --model_dir argument), the code uses torch.load() without 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 maliciously crafted model directory containing .pt files with embedded pickle payloads. When a victim loads this directory using CosyVoice's web interface, the malicious payload is executed, leading to remote code execution on the victim's system.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 14, 2026, 7:55 PM
Reserved
Mar 9, 2026, 12:00 AM
Status
Awaiting Analysis
Published
May 12, 2026, 6:16 PM
Modified
Jun 17, 2026, 10:33 AM