{"id":"CVE-2026-72537","aliases":["EUVD-2026-56007","GHSA-f25x-j567-ffxh"],"status":"published","title":"Authentik Security authentik - Privilege Escalation","description":"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":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00396,"percentile":0.34306,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2026-08-11T11:07:22Z","modified":"2026-10-28T02:31:13Z","products":[{"vendor":"authentik security","product":"authentik"},{"vendor":"goauthentik","product":"authentik"}],"references":[{"url":"https://github.com/goauthentik/authentik","tags":["package"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72537","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-f25x-j567-ffxh"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72537.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-72537","title":"Authentik Security authentik - Privilege Escalation","description":"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.","status":"published","published":"2026-08-11T11:07:22.941Z","modified":"2026-08-11T12:40:39.574Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:19:51.663093Z"}],"euvd":[{"id":"EUVD-2026-56007","description":"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.","status":"published","published":"2026-08-11T11:07:22Z","modified":"2026-08-11T12:40:39Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:02:00.294626Z"}],"ghsa":[{"id":"GHSA-f25x-j567-ffxh","title":"A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an...","description":"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.","status":"published","published":"2026-08-11T12:30:23Z","modified":"2026-08-11T12:30:23Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:10:17.025827Z"}],"nvd":[{"id":"CVE-2026-72537","description":"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.","status":"published","published":"2026-08-11T12:17:38.977Z","modified":"2026-10-24T15:10:00.19Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:12:36.499002Z"}],"osv":[{"id":"CVE-2026-72537","title":"Authentik Security authentik - Privilege Escalation","description":"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.","status":"published","published":"2026-08-11T11:07:22.941Z","modified":"2026-10-28T02:31:13.649029562Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:45:15.88521Z"}]}}