CVE-2026-72537 (GCVE-0-2026-72537)

Vulnerability from cvelistv5 – Published: 2026-08-11 11:07 – Updated: 2026-08-11 12:40
VLAI
Title
Authentik Security authentik - Privilege Escalation
Summary
A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an attacker with a source-scoped SCIM provisioning token to take over any user account including superusers by provisioning a SCIM user that matches an existing local user by username. The SCIM user ingest function adopts pre-existing local accounts by username without validating scope boundaries. An attacker can rewrite or delete any account, including the superuser, using only a limited provisioning credential.
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 2026-08-11 12:38 UTC
CWE
  • CWE-269 - Improper Privilege Management
Assigner
TuranSec CNA under the redhat root
CNA scorecard C 70/100 over 189 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Authentik Security authentik Affected: 0 , ≤ 2026.5.6 (custom)
guessed Create a notification for this product.
Credits
Bobur Abdugafforov (Mahadsec)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-72537",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-11T12:38:53.759720Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-11T12:40:39.574Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "authentik",
          "vendor": "Authentik Security",
          "versions": [
            {
              "lessThanOrEqual": "2026.5.6",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Bobur Abdugafforov (Mahadsec)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an attacker with a source-scoped SCIM provisioning token to take over any user account including superusers by provisioning a SCIM user that matches an existing local user by username. The SCIM user ingest function adopts pre-existing local accounts by username without validating scope boundaries. An attacker can rewrite or delete any account, including the superuser, using only a limited provisioning credential."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-11T11:07:22.941Z",
        "orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
        "shortName": "TuranSec"
      },
      "references": [
        {
          "name": "Project Repository",
          "url": "https://github.com/goauthentik/authentik"
        }
      ],
      "title": "Authentik Security authentik - Privilege Escalation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
    "assignerShortName": "TuranSec",
    "cveId": "CVE-2026-72537",
    "datePublished": "2026-08-11T11:07:22.941Z",
    "dateReserved": "2026-08-10T10:32:49.080Z",
    "dateUpdated": "2026-08-11T12:40:39.574Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-72537",
      "date": "2026-11-01",
      "epss": "0.00396",
      "percentile": "0.33876"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "authentik",
                "vendor": "Authentik Security",
                "versions": [
                  {
                    "lessThanOrEqual": "2026.5.6",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an attacker with a source-scoped SCIM provisioning token to take over any user account including superusers by provisioning a SCIM user that matches an existing local user by username. The SCIM user ingest function adopts pre-existing local accounts by username without validating scope boundaries. An attacker can rewrite or delete any account, including the superuser, using only a limited provisioning credential."
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad de escalada de privilegios en Authentik Security authentik hasta 2026.5.6 permite a un atacante con un token de aprovisionamiento SCIM con \u00e1mbito de origen tomar el control de cualquier cuenta de usuario, incluyendo superusuarios, mediante el aprovisionamiento de un usuario SCIM que coincide con un usuario local existente por nombre de usuario. La funci\u00f3n de ingesta de usuarios SCIM adopta cuentas locales preexistentes por nombre de usuario sin validar los l\u00edmites de \u00e1mbito. Un atacante puede reescribir o eliminar cualquier cuenta, incluyendo el superusuario, utilizando solo una credencial de aprovisionamiento limitada."
          }
        ],
        "id": "CVE-2026-72537",
        "lastModified": "2026-10-24T15:10:00.190",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-72537",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-11T12:38:53.759720Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-11T12:17:38.977",
        "references": [
          {
            "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
            "url": "https://github.com/goauthentik/authentik"
          }
        ],
        "sourceIdentifier": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-269"
              }
            ],
            "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-72537",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-11T12:38:53.759720Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-11T12:40:21.853Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "authentik",
              "vendor": "Authentik Security",
              "versions": [
                {
                  "lessThanOrEqual": "2026.5.6",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "Bobur Abdugafforov (Mahadsec)"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an attacker with a source-scoped SCIM provisioning token to take over any user account including superusers by provisioning a SCIM user that matches an existing local user by username. The SCIM user ingest function adopts pre-existing local accounts by username without validating scope boundaries. An attacker can rewrite or delete any account, including the superuser, using only a limited provisioning credential."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-269",
                  "description": "CWE-269: Improper Privilege Management",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-11T11:07:22.941Z",
            "orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
            "shortName": "TuranSec"
          },
          "references": [
            {
              "name": "Project Repository",
              "url": "https://github.com/goauthentik/authentik"
            }
          ],
          "title": "Authentik Security authentik - Privilege Escalation"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
        "assignerShortName": "TuranSec",
        "cveId": "CVE-2026-72537",
        "datePublished": "2026-08-11T11:07:22.941Z",
        "dateReserved": "2026-08-10T10:32:49.080Z",
        "dateUpdated": "2026-08-11T12:40:39.574Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.