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Vulnerability · Published Jul 10, 2026 · Assigned by GitHub_M

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

High 7.5

In plain English

A high-severity unsafe deserialization in spinnaker from spinnaker. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.1%top 35.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenio.spinnaker.rosco:rosco-manifests2025.3.4GHSA-p68j-q7hf-3qcp
Mavenio.spinnaker.rosco:rosco-manifests2025.4.4GHSA-p68j-q7hf-3qcp
Mavenio.spinnaker.rosco:rosco-manifests2026.0.3GHSA-p68j-q7hf-3qcp
Mavenio.spinnaker.rosco:rosco-manifests2026.1.1GHSA-p68j-q7hf-3qcp

Affected products (as reported)

VendorProductVersions
spinnaker spinnaker >= 2026.1.0, < 2026.1.1>= 2026.0.0, < 2026.0.3>= 2025.4.0, < 2025.4.4< 2025.3.4

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References