CVE-2026-44795 PUBLISHED

Spinnaker: Non-safe yaml deserialization allowing RCE when using specific types

Assigner: GitHub_M
Reserved: 07.05.2026 Published: 10.07.2026 Updated: 10.07.2026

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 when using CloudFormation deployments or CloudFoundry baking. The use of a non-safe constructor allows arbitrary loading of Java classes, leading to remote code execution. This issue is fixed in versions 2026.1.0, 2026.0.3, 2025.4.4, and 2025.3.3.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	spinnaker
Product	spinnaker
Versions	Version >= 2025.4.0, < 2025.4.4 is affected Version >= 2026.0.0, < 2026.0.3 is affected Version < 2025.3.3 is affected

References

Problem Types

CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') CWE
CWE-502: Deserialization of Untrusted Data CWE