CVE-2026-84202
Medium
Elevated severity or exploit probability.
CVSS base
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.7%
50.4th percentile
CISA KEV
Not listed
Weakness / dates
CWE-502
Published 2026-09-01 · modified 2026-09-08
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.
References
- https://github.com/modelscope/modelscope
- https://github.com/modelscope/modelscope/blob/v1.40.0/modelscope/models/audio/tts/voice.py
- https://github.com/modelscope/modelscope/blob/v1.40.0/modelscope/models/multi_modal/mplug/configuration_mplug.py
- https://github.com/modelscope/modelscope/issues/1660
- https://www.vulncheck.com/advisories/modelscope-through-1.40.0-unsafe-yaml-deserialization-in-model-config-loading
- https://github.com/modelscope/modelscope/issues/1660