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.
History

Tue, 12 May 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Funaudiollm
Funaudiollm cosyvoice
Vendors & Products Funaudiollm
Funaudiollm cosyvoice

Tue, 12 May 2026 18:45:00 +0000

Type Values Removed Values Added
Title Insecure Deserialization in CosyVoice Model Loading Enables Remote Code Execution

Tue, 12 May 2026 17:30:00 +0000

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

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-05-12T00:00:00.000Z

Updated: 2026-05-12T17:08:16.567Z

Reserved: 2026-03-09T00:00:00.000Z

Link: CVE-2026-31232

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-12T18:16:51.507

Modified: 2026-05-12T18:16:51.507

Link: CVE-2026-31232

cve-icon Redhat

No data.