Deserialization in Linuxfoundation Spinnaker
CVE-2026-55175
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.
Vulnerability class: Insecure Deserialization
EPSS: 0.011 (61.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linuxfoundation Spinnaker
- Spinnaker — versions >= 2026.1.0, < 2026.1.1, >= 2026.0.0, < 2026.0.3, >= 2025.4.0, < 2025.4.4
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-55175?
- CVE-2026-55175 is a high-severity vulnerability in Linuxfoundation Spinnaker, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2026-07-10.
- How severe is CVE-2026-55175?
- High severity. CVSS v3 base score is 7.5 out of 10.