GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2023-6841 (GCVE-0-2023-6841)

Vulnerability from cvelistv5 – Published: 2024-09-10 16:15 – Updated: 2025-11-08 07:10
VLAI
Title
Keycloak: amount of attributes per object is not limited and it may lead to dos
Summary
A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-01 20:20 UTC
CWE
  • CWE-231 - Improper Handling of Extra Values
Assigner
References
URL Tags
https://access.redhat.com/security/cve/CVE-2023-6841 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2254714 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Affected: 0 , < 24.0.0 (semver)
Red Hat Red Hat build of Quarkus     cpe:/a:redhat:openshift_application_runtimes:1.0
Create a notification for this product.
Red Hat Red Hat Fuse 7     cpe:/a:redhat:jboss_fuse:7
Create a notification for this product.
Red Hat Red Hat Mobile Application Platform 4     cpe:/a:redhat:mobile_application_platform:4
Create a notification for this product.
Red Hat Red Hat OpenShift Application Runtimes     cpe:/a:redhat:openshift_application_runtimes:1.0
Create a notification for this product.
Red Hat Red Hat Process Automation 7     cpe:/a:redhat:jboss_enterprise_bpms_platform:7
Create a notification for this product.
Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
Create a notification for this product.
Red Hat Red Hat support for Spring Boot     cpe:/a:redhat:openshift_application_runtimes:1.0
Create a notification for this product.
Date Public
2024-09-10 15:45
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-6841",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-01T20:20:35.831984Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-01T20:20:45.372Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/keycloak/keycloak",
          "defaultStatus": "unaffected",
          "packageName": "keycloak",
          "versions": [
            {
              "lessThan": "24.0.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_application_runtimes:1.0"
          ],
          "defaultStatus": "unaffected",
          "packageName": "keycloak",
          "product": "Red Hat build of Quarkus",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:jboss_fuse:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "keycloak",
          "product": "Red Hat Fuse 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:mobile_application_platform:4"
          ],
          "defaultStatus": "unaffected",
          "packageName": "keycloak",
          "product": "Red Hat Mobile Application Platform 4",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_application_runtimes:1.0"
          ],
          "defaultStatus": "unaffected",
          "packageName": "keycloak",
          "product": "Red Hat OpenShift Application Runtimes",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:jboss_enterprise_bpms_platform:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "keycloak",
          "product": "Red Hat Process Automation 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso7-keycloak",
          "product": "Red Hat Single Sign-On 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_application_runtimes:1.0"
          ],
          "defaultStatus": "unaffected",
          "packageName": "keycloak",
          "product": "Red Hat support for Spring Boot",
          "vendor": "Red Hat"
        }
      ],
      "datePublic": "2024-09-10T15:45:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Moderate"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-231",
              "description": "Improper Handling of Extra Values",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-08T07:10:39.283Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2023-6841"
        },
        {
          "name": "RHBZ#2254714",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2254714"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2023-12-15T00:00:00.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2024-09-10T15:45:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Keycloak: amount of attributes per object is not limited and it may lead to dos",
      "workarounds": [
        {
          "lang": "en",
          "value": "This CVE is mitigated by the \u0027User Profile\u0027 functionality, which was introduced in Keycloak 24. This feature introduces additional validation which prevents this vulnerability from being exploited."
        }
      ],
      "x_redhatCweChain": "CWE-231: Improper Handling of Extra Values"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2023-6841",
    "datePublished": "2024-09-10T16:15:32.639Z",
    "dateReserved": "2023-12-15T12:33:39.292Z",
    "dateUpdated": "2025-11-08T07:10:39.283Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-6841",
      "date": "2026-09-19",
      "epss": "0.00736",
      "percentile": "0.52974"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:*",
                  "matchCriteriaId": "6E0DE4E1-5D8D-40F3-8AC8-C7F736966158",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values."
        },
        {
          "lang": "es",
          "value": "Se encontr\u00f3 una vulnerabilidad de denegaci\u00f3n de servicio en keycloak, donde la cantidad de atributos por objeto no est\u00e1 limitada; un atacante al enviar solicitudes HTTP repetidas podr\u00eda causar un agotamiento de recursos cuando la aplicaci\u00f3n env\u00eda filas con valores de atributos largos."
        }
      ],
      "id": "CVE-2023-6841",
      "lastModified": "2024-10-01T14:15:05.207",
      "metrics": {
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 3.6,
            "source": "secalert@redhat.com",
            "type": "Primary"
          },
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Secondary"
          }
        ]
      },
      "published": "2024-09-10T17:15:15.170",
      "references": [
        {
          "source": "secalert@redhat.com",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2023-6841"
        },
        {
          "source": "secalert@redhat.com",
          "tags": [
            "Issue Tracking",
            "Vendor Advisory"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2254714"
        }
      ],
      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-231"
            }
          ],
          "source": "secalert@redhat.com",
          "type": "Secondary"
        },
        {
          "description": [
            {
              "lang": "en",
              "value": "NVD-CWE-noinfo"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://github.com/keycloak/keycloak",
                "defaultStatus": "unaffected",
                "packageName": "keycloak",
                "versions": [
                  {
                    "lessThan": "24.0.0",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_application_runtimes:1.0"
                ],
                "defaultStatus": "unaffected",
                "packageName": "keycloak",
                "product": "Red Hat build of Quarkus",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:jboss_fuse:7"
                ],
                "defaultStatus": "unaffected",
                "packageName": "keycloak",
                "product": "Red Hat Fuse 7",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:mobile_application_platform:4"
                ],
                "defaultStatus": "unaffected",
                "packageName": "keycloak",
                "product": "Red Hat Mobile Application Platform 4",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_application_runtimes:1.0"
                ],
                "defaultStatus": "unaffected",
                "packageName": "keycloak",
                "product": "Red Hat OpenShift Application Runtimes",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:jboss_enterprise_bpms_platform:7"
                ],
                "defaultStatus": "unaffected",
                "packageName": "keycloak",
                "product": "Red Hat Process Automation 7",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:red_hat_single_sign_on:7"
                ],
                "defaultStatus": "affected",
                "packageName": "rh-sso7-keycloak",
                "product": "Red Hat Single Sign-On 7",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_application_runtimes:1.0"
                ],
                "defaultStatus": "unaffected",
                "packageName": "keycloak",
                "product": "Red Hat support for Spring Boot",
                "vendor": "Red Hat"
              }
            ],
            "source": "secalert@redhat.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6E0DE4E1-5D8D-40F3-8AC8-C7F736966158",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values."
          },
          {
            "lang": "es",
            "value": "Se encontr\u00f3 una vulnerabilidad de denegaci\u00f3n de servicio en keycloak, donde la cantidad de atributos por objeto no est\u00e1 limitada; un atacante al enviar solicitudes HTTP repetidas podr\u00eda causar un agotamiento de recursos cuando la aplicaci\u00f3n env\u00eda filas con valores de atributos largos."
          }
        ],
        "id": "CVE-2023-6841",
        "lastModified": "2026-06-17T06:51:31.290",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "secalert@redhat.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2023-6841",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-01T20:20:35.831984Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-09-10T17:15:15.170",
        "references": [
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2023-6841"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2254714"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-231"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:59:45+00:00",
      "cve": "CVE-2023-6841",
      "id": "CVE-2023-6841",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "6",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "keycloak: Amount of attributes per object is not limited and it may lead to DOS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-6841.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2023-6841",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-10-01T20:20:35.831984Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-09-10T18:56:08.476Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://github.com/keycloak/keycloak",
              "defaultStatus": "unaffected",
              "packageName": "keycloak",
              "versions": [
                {
                  "lessThan": "24.0.0",
                  "status": "affected",
                  "version": "0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift_application_runtimes:1.0"
              ],
              "defaultStatus": "unaffected",
              "packageName": "keycloak",
              "product": "Red Hat build of Quarkus",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:jboss_fuse:7"
              ],
              "defaultStatus": "unaffected",
              "packageName": "keycloak",
              "product": "Red Hat Fuse 7",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:mobile_application_platform:4"
              ],
              "defaultStatus": "unaffected",
              "packageName": "keycloak",
              "product": "Red Hat Mobile Application Platform 4",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift_application_runtimes:1.0"
              ],
              "defaultStatus": "unaffected",
              "packageName": "keycloak",
              "product": "Red Hat OpenShift Application Runtimes",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:jboss_enterprise_bpms_platform:7"
              ],
              "defaultStatus": "unaffected",
              "packageName": "keycloak",
              "product": "Red Hat Process Automation 7",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:red_hat_single_sign_on:7"
              ],
              "defaultStatus": "affected",
              "packageName": "rh-sso7-keycloak",
              "product": "Red Hat Single Sign-On 7",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift_application_runtimes:1.0"
              ],
              "defaultStatus": "unaffected",
              "packageName": "keycloak",
              "product": "Red Hat support for Spring Boot",
              "vendor": "Red Hat"
            }
          ],
          "datePublic": "2024-09-10T15:45:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Moderate"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-231",
                  "description": "Improper Handling of Extra Values",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-11-08T07:10:39.283Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2023-6841"
            },
            {
              "name": "RHBZ#2254714",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2254714"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2023-12-15T00:00:00+00:00",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2024-09-10T15:45:00+00:00",
              "value": "Made public."
            }
          ],
          "title": "Keycloak: amount of attributes per object is not limited and it may lead to dos",
          "workarounds": [
            {
              "lang": "en",
              "value": "This CVE is mitigated by the \u0027User Profile\u0027 functionality, which was introduced in Keycloak 24. This feature introduces additional validation which prevents this vulnerability from being exploited."
            }
          ],
          "x_redhatCweChain": "CWE-231: Improper Handling of Extra Values"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2023-6841",
        "datePublished": "2024-09-10T16:15:32.639Z",
        "dateReserved": "2023-12-15T12:33:39.292Z",
        "dateUpdated": "2025-11-08T07:10:39.283Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.