Vulnerability-Lookup

CVE-2026-59655 (GCVE-0-2026-59655)

Vulnerability from cvelistv5 – Published: 2026-08-21 08:28 – Updated: 2026-08-21 08:28

Title

Apache CloudStack: Unauthenticated OAuth provider client-secret disclosure

Summary

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's OAuth authentication plugin while listing OAuth providers. This issue affects Apache CloudStack: from 4.19.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

Severity

No CVSS data available.

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

apache mitre root

References

1 reference

URL	Tags
https://lists.apache.org/thread/g6cwddtjrwbh1d56w…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache CloudStack	Affected: 4.19.0.0 , ≤ 4.20.3.0 (semver) Affected: 4.21.0.0 , ≤ 4.22.1.0 (semver)	guessed

Credits

Yuliang Xiao <xyl1509410143@outlook.com> Stijn Simons <stijn.simons@portofantwerpbruges.com>

Show details on NVD website

JSON

To clipboard

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          "product": "Apache CloudStack",
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              "status": "affected",
              "version": "4.21.0.0",
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          "type": "reporter",
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        },
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      "title": "Apache CloudStack: Unauthenticated OAuth provider client-secret disclosure",
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    "dateReserved": "2026-07-06T09:08:57.444Z",
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FKIE_CVE-2026-59655

Vulnerability from fkie_nvd - Published: 2026-08-21 09:16 - Updated: 2026-08-24 16:37

Severity

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Apache CloudStack",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "4.20.3.0",
              "status": "affected",
              "version": "4.19.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.22.1.0",
              "status": "affected",
              "version": "4.21.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@apache.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack\u0027s OAuth authentication plugin while listing OAuth providers.\n\nThis issue affects Apache CloudStack: from 4.19.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue."
    }
  ],
  "id": "CVE-2026-59655",
  "lastModified": "2026-08-24T16:37:45.780",
  "metrics": {},
  "published": "2026-08-21T09:16:38.533",
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  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
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          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "security@apache.org",
      "type": "Primary"
    }
  ]
}

GHSA-73GX-Q9Q8-7W92

Vulnerability from github – Published: 2026-08-21 09:32 – Updated: 2026-08-21 09:32

Details

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's OAuth authentication plugin while listing OAuth providers.

This issue affects Apache CloudStack: from 4.19.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.

Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-59655"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-21T09:16:38Z",
    "severity": null
  },
  "details": "Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack\u0027s OAuth authentication plugin while listing OAuth providers.\n\nThis issue affects Apache CloudStack: from 4.19.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.",
  "id": "GHSA-73gx-q9q8-7w92",
  "modified": "2026-08-21T09:32:05Z",
  "published": "2026-08-21T09:32:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59655"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-59655 (GCVE-0-2026-59655)

FKIE_CVE-2026-59655

GHSA-73GX-Q9Q8-7W92

Tags

Sightings

Nomenclature