CVE-2026-55175: Spinnaker: Improper yaml processing on kustomize bake operations
Impact Kustomize bake operations allow unsafe tag processing. This can lead to RCE type exploits on the rosco pods when doing kustomize bakes. This ONLY is possible when using Kustomize. The simple solution is to block kustomize operations and instead use another provider.
Workarounds Disable kustomize bakes
Other sources
Spinnaker is an open source, multi-cloud continuous delivery platform. Prior to versions 2026.1.1, 2026.0.3, 2025.4.4, and 2025.3.4 on their respective release lines, Kustomize bake operations allow unsafe YAML tag processing in rosco manifests. This can lead to remote code execution on rosco pods when performing Kustomize bakes. This issue is fixed in versions 2026.1.1, 2026.0.3, 2025.4.4, and 2025.3.4.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
maven/io.spinnaker.rosco:rosco-manifeststo a version that resolves this vulnerability.Fixed in 2026.1.1 - Upgrade
Upgrade
maven/io.spinnaker.rosco:rosco-manifeststo a version that resolves this vulnerability.Fixed in 2026.0.3 - Upgrade
Upgrade
maven/io.spinnaker.rosco:rosco-manifeststo a version that resolves this vulnerability.Fixed in 2025.4.4 - Upgrade
Upgrade
maven/io.spinnaker.rosco:rosco-manifeststo a version that resolves this vulnerability.Fixed in 2025.3.4 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2026.1.1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2026.0.3 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2025.4.4 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2025.3.4 - Configuration
Disable Kustomize bake operations (block kustomize operations) and use another provider instead when not using Kustomize.
Kustomize bake operations (rosco manifests) kustomize bakes = disabled
Event History
Frequently Asked Questions
What is the severity of CVE-2026-55175?
The severity of CVE-2026-55175 is rated high with a score of 7.5.
How do I fix CVE-2026-55175?
To mitigate CVE-2026-55175, upgrade to Spinnaker versions 2026.1.1, 2026.0.3, 2025.4.4, or 2025.3.4.
What are the potential impacts of CVE-2026-55175?
CVE-2026-55175 can lead to remote code execution on rosco pods due to improper YAML processing.
Which software is affected by CVE-2026-55175?
CVE-2026-55175 affects Spinnaker, specifically during Kustomize bake operations.
Are there any known exploits for CVE-2026-55175?
While specific exploits for CVE-2026-55175 have not been publicly disclosed, the vulnerability's nature implies a risk of exploitation.