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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.010 (62.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
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
- github.com/spinnaker/spinnaker/security/advisories/GHSA-c8q4-9h32-2ww8 (Third Party Advisory)
- github.com/spinnaker/spinnaker/commit/4cbe1d5fea9df573aadfd8b093fb4b594b354ee5 (Patch)
- github.com/spinnaker/spinnaker/commit/e57c0db4584b398473a7bbb19402ce6c1e89b627 (Patch)
- github.com/spinnaker/spinnaker/commit/f69d7b534d068ed74d0d3a1fbf17e2c945d36e5e (Patch)
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.