Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Spinnaker's rosco-core and orca-core Maven packages are affected in versions before 2025.3.3, from 2025.4.0 before 2025.4.4, and from 2026.0.0 before 2026.0.3. Unsafe YAML processing during CloudFormation deployments and CloudFoundry baking allows arbitrary Java class loading, which can lead to remote code execution. Upgrade to 2025.3.3, 2025.4.4, or 2026.0.3, depending on your release line. Until then, the source suggests disabling the CloudFormation and CloudFoundry baking operations.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.8 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.010, the 63rd percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:16 UTC First seen by agentprime
- 31 Oct 2026, 14:16 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-c8q4-9h32-2ww8
- OSV: GHSA-c8q4-9h32-2ww8
- github.com/spinnaker/spinnaker/security/advisories/GHSA-c8q4-9h32-2ww8
- nvd.nist.gov/vuln/detail/CVE-2026-44795
- github.com/spinnaker/spinnaker/commit/4cbe1d5fea9df573aadfd8b093fb4b594b354ee5
- github.com/spinnaker/spinnaker/commit/e57c0db4584b398473a7bbb19402ce6c1e89b627
- github.com/spinnaker/spinnaker/commit/f69d7b534d068ed74d0d3a1fbf17e2c945d36e5e
- github.com/spinnaker/spinnaker