Vulnerability-Lookup

GHSA-C8Q4-9H32-2WW8

Vulnerability from github – Published: 2026-06-22 20:43 – Updated: 2026-08-05 22:37

Summary

Spinnaker has non-safe yaml deserialization, allowing RCE when using specific types

Details

Impact

There's an unsafe YAML processing vulnerability that bypasses safe deserialization. This impacts users when when performing: * CloudFormation deployments * CloudFoundry Baking

The usage of a non-safe constructor use allows arbitrary loading of Java classes leading to RCE.

Patches

2025.3.3, 2026.0.3 and 2025.4.4.

Workarounds

Disable the CloudFormation system and cloudfoundry baking operations.

Resources

Join Spinnaker on Slack for more information!

Severity

8.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.spinnaker.rosco:rosco-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2025.3.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.spinnaker.orca:orca-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2025.3.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.spinnaker.rosco:rosco-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2025.4.0"
            },
            {
              "fixed": "2025.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.spinnaker.rosco:rosco-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2026.0.0"
            },
            {
              "fixed": "2026.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.spinnaker.orca:orca-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2025.4.0"
            },
            {
              "fixed": "2025.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.spinnaker.orca:orca-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2026.0.0"
            },
            {
              "fixed": "2026.0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44795"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-470",
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-22T20:43:37Z",
    "nvd_published_at": "2026-07-10T22:16:41Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nThere\u0027s an unsafe YAML processing vulnerability that bypasses safe deserialization. This impacts users when when performing:\n* CloudFormation deployments\n* CloudFoundry Baking\n\nThe usage of a non-safe constructor use allows arbitrary loading of Java classes leading to RCE.\n\n### Patches\n 2025.3.3, 2026.0.3 and 2025.4.4.\n\n### Workarounds\nDisable the CloudFormation system and cloudfoundry baking operations.\n\n### Resources\nJoin Spinnaker on Slack for more information!",
  "id": "GHSA-c8q4-9h32-2ww8",
  "modified": "2026-08-05T22:37:48Z",
  "published": "2026-06-22T20:43:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/spinnaker/spinnaker/security/advisories/GHSA-c8q4-9h32-2ww8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44795"
    },
    {
      "type": "WEB",
      "url": "https://github.com/spinnaker/spinnaker/commit/4cbe1d5fea9df573aadfd8b093fb4b594b354ee5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/spinnaker/spinnaker/commit/e57c0db4584b398473a7bbb19402ce6c1e89b627"
    },
    {
      "type": "WEB",
      "url": "https://github.com/spinnaker/spinnaker/commit/f69d7b534d068ed74d0d3a1fbf17e2c945d36e5e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/spinnaker/spinnaker"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Spinnaker has non-safe yaml deserialization, allowing RCE when using specific types"
}

CVE-2026-44795 (GCVE-0-2026-44795)

Vulnerability from cvelistv5 – Published: 2026-07-10 21:49 – Updated: 2026-07-15 03:59

Title

Spinnaker: Non-safe yaml deserialization allowing RCE when using specific types

Summary

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-14 00:00 UTC

CWE

CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
CWE-502 - Deserialization of Untrusted Data

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7637 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/spinnaker/spinnaker/security/a…	x_refsource_CONFIRM
https://github.com/spinnaker/spinnaker/commit/4cb…	x_refsource_MISC
https://github.com/spinnaker/spinnaker/commit/e57…	x_refsource_MISC
https://github.com/spinnaker/spinnaker/commit/f69…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
spinnaker	spinnaker	Affected: >= 2025.4.0, < 2025.4.4 Affected: >= 2026.0.0, < 2026.0.3 Affected: < 2025.3.3

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-44795",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "total"
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                "role": "CISA Coordinator",
                "timestamp": "2026-07-14T00:00:00+00:00",
                "version": "2.0.3"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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      "affected": [
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          "vendor": "spinnaker",
          "versions": [
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              "version": "\u003e= 2026.0.0, \u003c 2026.0.3"
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      "descriptions": [
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          "lang": "en",
          "value": "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."
        }
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      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
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        {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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