What’s Vulnerable › Vulnerabilities

CVE-2026-55175: Spinnaker: Improper yaml processing on kustomize bake operations

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-07-21
• Weakness: CWE-502

Description

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.

Affected products

• spinnaker: from 2025.3.0 before 2025.3.4; from 2025.4.0 before 2025.4.4; from 2026.0.0 before 2026.0.3; from 2026.1.0 before 2026.1.1 — fixed in 2025.3.4, 2025.4.4, 2026.0.3, 2026.1.1

How to fix

Upgrade to a fixed version: spinnaker 2025.3.4, 2025.4.4, 2026.0.3, 2026.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/spinnaker/spinnaker/commit/2d75818b85cc4c35144d5e5ed45e7340fcab5dfe
• https://github.com/spinnaker/spinnaker/commit/bbc30c9b9034a056e95f012fa1b34e9fd703cae7
• https://github.com/spinnaker/spinnaker/commit/de5a7a05af35aee19eb71d289cd0b77f67509009
• https://github.com/spinnaker/spinnaker/commit/df32d568e82519d9f3896fc9007baba0077c87fd
• https://github.com/spinnaker/spinnaker/commit/f5cec213f8cf207843ed5a6929395960a1ca094f
• https://github.com/spinnaker/spinnaker/releases/tag/rosco-2025.3.4
• https://github.com/spinnaker/spinnaker/releases/tag/rosco-2025.4.4
• https://github.com/spinnaker/spinnaker/releases/tag/rosco-2026.0.3
• https://github.com/spinnaker/spinnaker/releases/tag/rosco-2026.1.1
• https://github.com/spinnaker/spinnaker/releases/tag/rosco-2026.2.0
• https://github.com/spinnaker/spinnaker/security/advisories/GHSA-p68j-q7hf-3qcp

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