Spinnaker has non-safe yaml deserialization, allowing RCE when using specific types
### 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 Join Spinnaker on Slack for more information!
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-44795US | — | — | ||
Spinnaker is an open source, multi-cloud continuous delivery platform. Prior to 2026.1.0, 2026.0.3, 2025.4.4, and 2025.3.3, unsafe YAML processing bypasses safe deserialization whe… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/spinnaker/spinnakerPACKAGE
- https://github.com/spinnaker/spinnaker/commit/4cbe1d5fea9df573aadfd8b093fb4b594b354ee5WEB
- https://github.com/spinnaker/spinnaker/commit/e57c0db4584b398473a7bbb19402ce6c1e89b627WEB
- https://github.com/spinnaker/spinnaker/commit/f69d7b534d068ed74d0d3a1fbf17e2c945d36e5eWEB
- https://github.com/spinnaker/spinnaker/security/advisories/GHSA-c8q4-9h32-2ww8WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-44795ADVISORY
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