CVE-2020-13092Public exploitNetwork attack vector

Code execution via untrusted joblib model loading

Published May 15, 2020 · Updated Aug 4, 2024

Unsafe deserialization in scikit-learn 0.23.0 and earlier allows attackers to execute commands by loading an untrusted joblib model file. joblib.load uses the pickle protocol, which invokes attacker-controlled reduce callables such as os.system while reconstructing objects. Exploitation requires an application or user to load the crafted artifact; scikit-learn documents this behavior as unsafe by design, and the CVE is disputed.

CVSS severity9.8
Critical
EPSS probability2.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in scikit-learn 0.23.0 and earlier allows attackers to execute commands by loading an untrusted joblib model file. joblib.load uses the pickle protocol, which invokes attacker-controlled reduce callables such as os.system while reconstructing objects. Exploitation requires an application or user to load the crafted artifact; scikit-learn documents this behavior as unsafe by design, and the CVE is disputed.

The record

CVE
CVE-2020-13092
Published
May 15, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1059Command and Scripting Interpreter

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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