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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
modelscope modelscope unaffected
Version Status Constraints
0 affected ≤ 1.40.0

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/modelscope/modelscope cve-icon cve-icon
https://github.com/modelscope/modelscope/blob/v1.40.0/modelscope/models/audio/tts/voice.py cve-icon cve-icon
https://github.com/modelscope/modelscope/blob/v1.40.0/modelscope/models/multi_modal/mplug/configuration_mplug.py cve-icon cve-icon
https://github.com/modelscope/modelscope/issues/1660 cve-icon cve-icon cve-icon
https://www.vulncheck.com/advisories/modelscope-through-1.40.0-unsafe-yaml-deserialization-in-model-config-loading cve-icon cve-icon
History

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

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

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses