FKIE_CVE-2023-0091

Vulnerability from fkie_nvd - Published: 2023-01-13 06:15 - Updated: 2026-06-17 05:24
Severity
3.8 (Low) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
3.8 (Low) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Summary
A flaw was found in Keycloak, where it did not properly check client tokens for possible revocation in its client credential flow. This flaw allows an attacker to access or modify potentially sensitive information.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-0091Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-0091Vendor Advisory
Impacted products
Vendor Product Version
redhat keycloak -
redhat single_sign-on 7.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Keycloak",
          "vendor": "redhat.com",
          "versions": [
            {
              "status": "unknown",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "6E0DE4E1-5D8D-40F3-8AC8-C7F736966158",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
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              "matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Keycloak, where it did not properly check client tokens for possible revocation in its client credential flow. This flaw allows an attacker to access or modify potentially sensitive information."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla en Keycloak, donde no verific\u00f3 adecuadamente los tokens de los clientes para detectar una posible revocaci\u00f3n en su flujo de credenciales de cliente. Esta falla permite a un atacante acceder o modificar informaci\u00f3n potencialmente confidencial."
    }
  ],
  "id": "CVE-2023-0091",
  "lastModified": "2026-06-17T05:24:45.587",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.8,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
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        "impactScore": 2.5,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.8,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
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        "impactScore": 2.5,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
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    "ssvcV203": [
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        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-09T14:08:50.042443Z",
          "version": "2.0.3"
        }
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    ]
  },
  "published": "2023-01-13T06:15:11.930",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
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      "url": "https://access.redhat.com/security/cve/CVE-2023-0091"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-863"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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