ModelScope uses PyYAML's unsafe yaml.Loader to parse model configuration files, allowing arbitrary code execution through Python object construction tags. Attackers can craft malicious model repositories with poisoned configuration files that execute code when loaded by users.
History

Wed, 02 Sep 2026 03:45:00 +0000

Type Values Removed Values Added
First Time appeared Modelscope
Modelscope modelscope
Vendors & Products Modelscope
Modelscope modelscope

Wed, 02 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-94
References
Metrics threat_severity

None

threat_severity

Important


Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Description ModelScope uses PyYAML's unsafe yaml.Loader to parse model configuration files, allowing arbitrary code execution through Python object construction tags. Attackers can craft malicious model repositories with poisoned configuration files that execute code when loaded by users.
Title ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading
Weaknesses CWE-502
References
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'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-01T15:18:57.372Z

Updated: 2026-09-01T17:37:34.765Z

Reserved: 2026-09-01T11:03:27.973Z

Link: CVE-2026-84202

cve-icon Vulnrichment

Updated: 2026-09-01T17:37:23.996Z

cve-icon NVD

Status : Received

Published: 2026-09-01T16:17:34.450

Modified: 2026-09-01T18:17:48.503

Link: CVE-2026-84202

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-01T15:18:57Z

Links: CVE-2026-84202 - Bugzilla