CVE-2026-84202Public exploitNetwork attack vectorHinoki check available

Code execution via unsafe model YAML loading

Published Sep 1, 2026 · Updated Sep 1, 2026

Unsafe deserialization in ModelScope 1.40.0 and earlier allows remote attackers to execute arbitrary code through crafted model YAML files. MPlugConfig.from_yaml_file, HiTeAConfig.from_yaml_file, and SambertHifigan Voice methods pass repository config.yaml content to PyYAML yaml.Loader, which constructs tagged Python objects. A user must load an attacker-controlled MPlug, HiTeA, or SambertHifigan model repository; injected code then runs with the ModelScope process privileges.

CVSS severity8.7
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Unsafe deserialization in ModelScope 1.40.0 and earlier allows remote attackers to execute arbitrary code through crafted model YAML files. MPlugConfig.from_yaml_file, HiTeAConfig.from_yaml_file, and SambertHifigan Voice methods pass repository config.yaml content to PyYAML yaml.Loader, which constructs tagged Python objects. A user must load an attacker-controlled MPlug, HiTeA, or SambertHifigan model repository; injected code then runs with the ModelScope process privileges.

The record

CVE
CVE-2026-84202
Published
Sep 1, 2026
Updated
Sep 1, 2026
Vendor
ModelScope
Product
ModelScope
Classifications
CWE-94, CWE-502, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.40.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ModelScope · ModelScopeversion=0 <=1.40.0

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-502Deserialization of Untrusted Data
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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