CVE-2026-84202 PUBLISHED

ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading

Assigner: VulnCheck
Reserved: 01.09.2026 Published: 01.09.2026 Updated: 01.09.2026

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.

CVSS 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
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	modelscope
Product	modelscope
Versions	Default: unaffected affected from 0 to 1.40.0 (incl.)

CVE-2026-84202 PUBLISHED

ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading

Metrics

Product Status

Credits

References

Problem Types