---
title: "CVE-2026-100308: Amazon GluonTS - Insecure Deserialization"
description: "Amazon GluonTS < 0.17.0 contains an insecure deserialization vulnerability caused by deserialization of untrusted data in the model loading component, letting context-dependent attackers execute arbitrary OS commands, exploit requires crafted serialized model directory."
url: https://panop.io/threat-heartbeat/CVE-2026-100308/
---

# CVE-2026-100308 Amazon GluonTS - Insecure Deserialization

Amazon GluonTS < 0.17.0 contains an insecure deserialization vulnerability caused by deserialization of untrusted data in the model loading component, letting context-dependent attackers execute arbitrary OS commands, exploit requires crafted serialized model directory.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-100308)

## Details

Type

Insecure Deserialization

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

29 September 2026

Updated

15 October 2026

Weakness

[CWE-470](https://cwe.mitre.org/data/definitions/470.html)

## Vendor fix

Upgrade to version 0.17.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-100308](https://nvd.nist.gov/vuln/detail/CVE-2026-100308)
- [https://aws.amazon.com/security/security-bulletins/2026-119-aws/](https://aws.amazon.com/security/security-bulletins/2026-119-aws/)
- [https://github.com/awslabs/gluonts/releases/tag/v0.17.0](https://github.com/awslabs/gluonts/releases/tag/v0.17.0)
- [https://github.com/awslabs/gluonts/security/advisories/GHSA-64q6-5qv7-cwj9](https://github.com/awslabs/gluonts/security/advisories/GHSA-64q6-5qv7-cwj9)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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