CVE-2026-31217

Code execution via attacker-controlled module loading

Published May 12, 2026 · Updated May 12, 2026

Code injection in Nebuly OptiMate 2024-07-21 allows local users to execute arbitrary Python code through a crafted model directory. The _load_model() function in neural_magic_training.py reads module.py from the directory passed through --model and sends its unvalidated contents directly to Python's exec(). Exploitation requires control of the chosen directory and invocation of the training script; successful code runs with the script process's privileges.

CVSS severity9.8
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Nebuly OptiMate 2024-07-21 allows local users to execute arbitrary Python code through a crafted model directory. The _load_model() function in neural_magic_training.py reads module.py from the directory passed through --model and sends its unvalidated contents directly to Python's exec(). Exploitation requires control of the chosen directory and invocation of the training script; successful code runs with the script process's privileges.

The record

CVE
CVE-2026-31217
Published
May 12, 2026
Updated
May 12, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1059.006
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

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

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.006Command and Scripting Interpreter: Python

Public exploit references

No public exploit references are available in this record.

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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