How severe is CVE-2026-31217?

CVE-2026-31217 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-31217 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31217?

CVE-2026-31217 affects Nebuly Optimate. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-31217?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-31217 have an EU (EUVD) identifier?

Yes. CVE-2026-31217 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29501.

When was CVE-2026-31217 published?

CVE-2026-31217 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-31217

CVE-2026-31217 is a critical-severity vulnerability in Nebuly Optimate with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29501
Weakness: CWE-94
Affected product: Nebuly Optimate
Published: 2026-05-12
Last modified: 2026-06-17

Description

The _load_model() function in the neural_magic_training.py script of the optimate project in commit a6d302f912b481c94370811af6b11402f51d377f (2024-07-21) allows arbitrary code execution. When a user supplies a directory path via the --model command-line argument, the function reads a module.py file from that directory and executes its contents directly using Python's exec() function. This design does not validate or sanitize the file's content, allowing an attacker who controls the input directory to execute arbitrary Python code in the context of the process running the script.

Frequently asked questions

What is CVE-2026-31217?: The _load_model() function in the neural_magic_training.py script of the optimate project in commit a6d302f912b481c94370811af6b11402f51d377f (2024-07-21) allows arbitrary code execution. When a user supplies a directory path via the --model command-line argument, the function reads a module.py file from that directory and executes its contents directly using Python's exec() function. This design does not validate or sanitize the file's content, allowing an attacker who controls the input directory to execute arbitrary Python code in the context of the process running the script.
How severe is CVE-2026-31217?: CVE-2026-31217 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-31217 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31217?: CVE-2026-31217 affects Nebuly Optimate. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-31217?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-31217 have an EU (EUVD) identifier?: Yes. CVE-2026-31217 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29501.
When was CVE-2026-31217 published?: CVE-2026-31217 was published on 2026-05-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nebuly:optimate:2024-07-21:*:*:*:*:*:*:*

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