CVE-2026-84202
ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-502 |
| Vendor | modelscope |
| Product | modelscope |
| Published | Sep 1, 2026 |
| Last Updated | Sep 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
modelscope / modelscope
0 ≤ 1.40.0
References
github.com: https://github.com/modelscope/modelscope github.com: https://github.com/modelscope/modelscope/issues/1660 github.com: https://github.com/modelscope/modelscope/blob/v1.40.0/modelscope/models/audio/tts/voice.py github.com: https://github.com/modelscope/modelscope/blob/v1.40.0/modelscope/models/multi_modal/mplug/configuration_mplug.py vulncheck.com: https://www.vulncheck.com/advisories/modelscope-through-1.40.0-unsafe-yaml-deserialization-in-model-config-loading
Credits
Vancir Michael Holmquist