CVE-2026-31251
HIGH EPSS 12.2%
Published May 11, 20261mo ago · Modified Jun 17, 20262w ago
7.3 CVSS 3.1
Published May 11, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
Description
CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its gRPC server component. When the server starts, it loads the speech synthesis model from a user-specified directory 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 model files within a directory. When a victim starts the gRPC server pointing to this directory, arbitrary code is executed on the victim's system during server initialization.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability Low
Threat Intelligence
EPSS Exploit Probability
12.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 3
CWE-20 Improper Input Validation Validation
CWE-915
CWE-94 Improper Control of Generation of Code (Code Injection) Injection
References 2
- github.com https://github.com/FunAudioLLM/CosyVoice
- notion.so https://www.notion.so/CVE-2026-31251-35d1e1393188816f9bf5f3ccea3aa16f
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.