CVE-2026-84202

ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading

HIGH
8.8
CVSS Score
Published: September 1, 2026 at 03:18 PM UTC
Updated: September 8, 2026 at 08:29 PM UTC
1 product affected across 1 vendorModelScope

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.40.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-502

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