CVE-2026-100308 - GluonTS arbitrary command execution during model deserialization
The vendor has published a new security advisory. Here is a summary and what to do.
Key points
- New advisory from the vendor.
- Review affected versions in the advisory.
- Apply updates promptly.
The vendor published a security advisory titled “CVE-2026-100308 - GluonTS arbitrary command execution during model deserialization”.
At a glance
- Publisher
- the vendor
- CVEs
- CVE-2026-100308
What the advisory says
Bulletin ID: 2026-119-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 09/29/2026 08:00 AM PDT Description: GluonTS is an open source library for deep learning based time series models. We identified CVE-2026-100308 that allows arbitrary command execution upon deserialization of untrusted model artifacts. Deserialization of untrusted data in the model loading component in Amazon GluonTS before 0.17.0 might allow context-dependent attackers to execute arbitrary operating system commands with the privileges of the loading process via a crafted serialized model directory. The issue arises whenever a user calls Predictor.deserialize() or any RepresentablePredictor.deserialize() on a model directory they do not fully control. Impacted versions: <0.17.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security B
What should you do?
- Read the full vendor advisory linked below and confirm whether you run affected versions.
- Schedule the recommended update, prioritising internet-facing systems.
- Watch for exploitation reports; unpatched edge devices are frequent targets.
What to do and how to stay safe: CVE-2026-100308
- Patch scores alone ignore context like network exposure and asset criticality.
- You must map vulnerabilities to specific business risks to prioritize correctly.
- Continuous exposure data replaces static scanning for accurate prioritization.
Prioritize vulnerabilities by actual exploitability and business impact, not by theoretical severity scores. Update your asset context and exposure data continuously to maintain accurate risk rankings.
Step-by-step guide: Risk Based Vulnerability Management: Prioritize Fixes by Actual Threat
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
