Vulnerability in io.spinnaker.rosco:rosco-core (CVE-2026-44795)
Summary
Vulnerability in io.spinnaker.rosco:rosco-core (CVE-2026-44795). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 2025.3.3 or later.
Original description
The description as published by the source.
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.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-44795 has been found in io.spinnaker.rosco:rosco-core.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: upgrade io.spinnaker.rosco:rosco-core to 2025.3.3 or later.
If unsure, ask your IT team or search "io.spinnaker.rosco:rosco-core CVE-2026-44795" on the vendor's site.
CVE-2026-44795 (io.spinnaker.rosco:rosco-core) — CWE-470 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
Patched: 2025.3.3 — apply immediately
Workaround: Disable the CloudFormation system and cloudfoundry baking operations.
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-470) exists in io.spinnaker.rosco:rosco-core.
Check the vendor advisory for the affected versions of io.spinnaker.rosco:rosco-core.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
Update to 2025.3.3.
Workaround: Disable the CloudFormation system and cloudfoundry baking operations.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで io.spinnaker.rosco:rosco-core を使っているサービスとバージョンを洗い出す。
-
2Apply temporary workaround mitigate
Disable the CloudFormation system and cloudfoundry baking operations.パッチが適用されるまでの応急処置として、Disable the CloudFormation system and cloudfoundry baking operations. を実施。回避策の副作用 (機能低下) を確認した上で。
-
3Apply patch patch
Upgrade io.spinnaker.rosco:rosco-core to 2025.3.3ステージング環境で 2025.3.3 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
4Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- patch github.com
- patch github.com
- patch github.com
- web github.com