Deserialization in Linuxfoundation Spinnaker
CVE-2026-44795
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.
EPSS: 0.010 (60.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linuxfoundation Spinnaker
- Spinnaker — versions >= 2025.4.0, < 2025.4.4, >= 2026.0.0, < 2026.0.3, < 2025.3.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-44795?
- CVE-2026-44795 is a high-severity vulnerability in Linuxfoundation Spinnaker, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 8.8/10. Published 2026-07-10.
- How severe is CVE-2026-44795?
- High severity. CVSS v3 base score is 8.8 out of 10.