HIGH 8.5 Maven

Spinnaker has non-safe yaml deserialization, allowing RCE when using specific types

GHSA-c8q4-9h32-2ww8 · CVE-2026-44795

Published · Modified

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Description

Impact

There's an unsafe YAML processing vulnerability that bypasses safe deserialization. This impacts users when when performing:

  • CloudFormation deployments
  • CloudFoundry Baking

The usage of a non-safe constructor use allows arbitrary loading of Java classes leading to RCE.

Patches

2025.3.3, 2026.0.3 and 2025.4.4.

Workarounds

Disable the CloudFormation system and cloudfoundry baking operations.

Resources

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