CVE-2026-44795CWE-470CWE-502

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

High · published July 10, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
62.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01012 · 62.9th percentile
Weaknesses
CWE-470 · Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection'); CWE-502 · Deserialization of Untrusted Data
Published
2026-07-10T21:49Z
EPSS history
Timeline
  • 10 JUL 21:49Z
    Spinnaker: Non-safe yaml deserialization allowing RCE when using specific types
    cvelistv5