Remote Code Execution in Spinnaker Due to Unsafe YAML Processing
CVE-2026-44795

8.8HIGH

Key Information:

Vendor

Spinnaker

Status
Spinnaker
Vendor
CVE Published:
10 July 2026

What is CVE-2026-44795?

A vulnerability in Spinnaker arises from unsafe YAML processing, which bypasses safe deserialization features during CloudFormation deployments and CloudFoundry baking. The issue is tied to a non-safe constructor that allows arbitrary loading of Java classes, which could lead to remote code execution. This vulnerability affects versions prior to 2026.1.0, 2026.0.3, 2025.4.4, and 2025.3.3, putting systems at risk until patched.

Affected Version(s)

spinnaker >= 2025.4.0, < 2025.4.4 < 2025.4.0, 2025.4.4

spinnaker >= 2026.0.0, < 2026.0.3 < 2026.0.0, 2026.0.3

spinnaker < 2025.3.3 < 2025.3.3

References

https://github.com/spinnaker/spinnaker/security/advisorie...
x_refsource_CONFIRM
https://github.com/spinnaker/spinnaker/commit/4cbe1d5fea9...
x_refsource_MISC
https://github.com/spinnaker/spinnaker/commit/e57c0db4584...
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.