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CVE-2026-44795— Spinnaker: Non-safe yaml deserialization allowing RCE when using specific types

Quick assessment

Affected
spinnaker spinnaker
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Spinnaker是Spinnaker团队开源的一个持续交付平台。用于以高速度和高信心发布软件更改。 Spinnaker存在安全漏洞，该漏洞源于当使用CloudFormation部署或CloudFoundry烘焙时，不安全的YAML处理会绕过安全的反序列化，使用非安全的构造函数允许任意加载Java类，导致远程代码执行。以下版本受到影响：2026.1.0之前版本、2026.0.3之前版本、2025.4.4之前版本和2025.3.3之前版本。

CVSS 8.8 · High EPSS 1.01% · P63

Affected Version Matrix 3

VendorProduct Version RangeStatus
spinnaker spinnaker >= 2025.4.0, < 2025.4.4 affected
>= 2026.0.0, < 2026.0.3 affected
< 2025.3.3 affected
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I. Basic Information for CVE-2026-44795

Vulnerability Information
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Vulnerability Title
Spinnaker: Non-safe yaml deserialization allowing RCE when using specific types
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部可控制的输入来选择类或代码(不安全的反射)
Source: CVE Program / CVE List V5
Vulnerability Title
Spinnaker 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Spinnaker是Spinnaker团队开源的一个持续交付平台。用于以高速度和高信心发布软件更改。 Spinnaker存在安全漏洞，该漏洞源于当使用CloudFormation部署或CloudFoundry烘焙时，不安全的YAML处理会绕过安全的反序列化，使用非安全的构造函数允许任意加载Java类，导致远程代码执行。以下版本受到影响：2026.1.0之前版本、2026.0.3之前版本、2025.4.4之前版本和2025.3.3之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
spinnaker spinnaker >= 2025.4.0, < 2025.4.4 -

II. Public POCs for CVE-2026-44795

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III. Intelligence Information for CVE-2026-44795

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Patches & Fixes for CVE-2026-44795 (3)

Vendor Advisories for CVE-2026-44795 (1)

IV. Related Vulnerabilities

Same product: spinnaker
Same vendor: spinnaker
Same weakness: CWE-470

V. Comments for CVE-2026-44795

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