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TI-2020-17498 Aliases CVE-2020-28975GHSA-jxfp-4rvq-9h9m

svm_predict_values in svm.cpp in Libsvm v324, as used in scikit-learn 0.23.2 and other…

Priority HIGH 66Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

svm_predict_values in svm.cpp in Libsvm v324, as used in scikit-learn 0.23.2 and other products, allows attackers to cause a denial of service (segmentation fault) via a crafted model SVM (introduced via pickle, json, or any other model permanence standard) with a large value in the _n_support array. NOTE: the scikit-learn vendor's position is that the behavior can only occur if the library's API is violated by an application that changes a private attribute.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.03568 89th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix Fixed scikit-learn (PyPI): 1.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—scikit-learn (PyPI)0.23.2 to before 1.0.11.0.1Patch availableGHSA-jxfp-4rvq-9h9m
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • scikit-learn (PyPI) Vendor— Affected 0.23.2 to before 1.0.1 Fixed in 1.0.1 Patch available GHSA-jxfp-4rvq-9h9m

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:scikit-learn:scikit-learn:*:*:*:*:*:*:*:*0.23.2 to before 1.0.1Vulnerablescikit-learn
  • cpe:2.3:a:scikit-learn:scikit-learn:*:*:*:*:*:*:*:* Versions 0.23.2 to before 1.0.1 Vulnerable ·scikit-learn

Remediation

  • Fix · GHSA-jxfp-4rvq-9h9m scikit-learn (PyPI) Fixed in 1.0.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-28975
  2. 2026-10-03 Alias added: GHSA-jxfp-4rvq-9h9m

References

Exploit 3

Patch 1

Advisory 3

Other 2

  • TI-2024-04831 Sensitive Data Leakage in sklearn.feature_extraction.text.TfidfVectorizer in scikit-learn/scikit-learn CVSS 3.1MEDIUM 4.7
  • TI-2020-10297 scikit-learn (aka sklearn) through 0.23.0 can unserialize and execute commands from an… CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences