Arbitrary Code Execution Vulnerability in ModelScope by ModelScope Inc.
CVE-2026-84202

8.7HIGH

Key Information:

Vendor

Modelscope

Status
Modelscope
Vendor
CVE Published:
1 September 2026

What is CVE-2026-84202?

ModelScope utilizes PyYAML's unsafe yaml.Loader to handle model configuration files, which can lead to arbitrary code execution. Malicious actors may create compromised model repositories containing these files, enabling them to execute harmful code upon loading by unsuspecting users. This security flaw poses significant risks, particularly for users integrating external models.

Affected Version(s)

modelscope 0 <= 1.40.0

References

https://github.com/modelscope/modelscope
product
https://github.com/modelscope/modelscope/issues/1660
issue-tracking
https://github.com/modelscope/modelscope/blob/v1.40.0/mod...
technical-description

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Vancir
Michael Holmquist
.