CVE-2026-40172

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Source

https://cve.org/CVERecord?id=CVE-2026-40172

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40172.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-40172

Aliases

BIT-authentik-2026-40172
GHSA-h6x7-hjjc-wjc9

Published

2026-05-22T19:00:52Z

Modified

2026-10-28T02:30:40Z

Severity

8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator

Summary

authentik: Privilege Escalation via User PATCH: Superuser Group Assignment Bypasses enable_group_superuser

Details

authentik is an open-source identity provider. In versions prior to 2025.12.5 and 2026.2.0-rc1 through 2026.2.2, the PATCH /api/v3/core/users/{pk}/ API allows a caller with change_user on a target user to assign arbitrary groups through UserSerializer, including groups with is_superuser=True, without requiring enable_group_superuser, leading to privilege escalation. This bypasses the stricter permission model enforced in group-management paths and enables delegated user-management permissions to escalate target users to administrator-equivalent privilege. Users with permissions to update groups or permissions to update users are able to add themselves or other users they have permissions on to users which have superuser permissions. This issue has been fixed in versions 22025.12.5 and 2026.2.3.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-269"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40172.json"
}

References

Affected packages

Git / github.com/goauthentik/authentik

Affected ranges

Type

GIT

Repo

https://github.com/goauthentik/authentik

Events

Introduced

Fixed

c89d7c12d0d0cc213c43758475fe5f44e893b0cd

Introduced

3394c17bfd5e208f8e8d53e450158e486afe575b

Fixed

095e2897d52397962d153be2d689cedcdb71906c

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "2025.12.5"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "introduced": "2026.2.0-rc1"
                },
                {
                    "fixed": "2026.2.3"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        }
    ]
}

Affected versions

version/0.*

version/0.0.10-alpha

version/0.0.11-alpha

version/0.0.12-alpha

version/0.0.13-alpha

version/0.0.2-alpha

version/0.0.3-alpha

version/0.0.4-alpha

version/0.0.5-alpha

version/0.0.6-alpha

version/0.0.7-alpha

version/0.0.8-alpha

version/0.0.9-alpha

version/0.1.0-beta

version/0.1.1-beta

version/0.1.10-beta

version/0.1.11-beta

version/0.1.12-beta

version/0.1.13-beta

version/0.1.14-beta

version/0.1.15-beta

version/0.1.16-beta

version/0.1.17-beta

version/0.1.18-beta

version/0.1.19-beta

version/0.1.2-beta

version/0.1.20-beta

version/0.1.21-beta

version/0.1.22-beta

version/0.1.23-beta

version/0.1.24-beta

version/0.1.25-beta

version/0.1.26-beta

version/0.1.27-beta

version/0.1.28-beta

version/0.1.29-beta

version/0.1.3-beta

version/0.1.30-beta

version/0.1.31-beta

version/0.1.32-beta

version/0.1.33-beta

version/0.1.34-beta

version/0.1.35-beta

version/0.1.36-beta

version/0.1.37-beta

version/0.1.38-beta

version/0.1.4-beta

version/0.1.5-beta

version/0.1.6-beta

version/0.1.7-beta

version/0.1.8-beta

version/0.1.9-beta

version/0.10.0-rc1

version/0.10.0-rc2

version/0.10.0-rc3

version/0.10.0-rc4

version/0.10.0-rc5

version/0.10.0-rc6

version/0.10.0-stable

version/0.10.1-stable

version/0.10.2-stable

version/0.10.3-stable

version/0.10.4-stable

version/0.10.5-stable

version/0.10.6-stable

version/0.10.7-stable

version/0.10.8-stable

version/0.10.9-stable

version/0.11.0-stable

version/0.12.0-stable

version/0.12.1-stable

version/0.12.10-stable

version/0.12.11-stable

version/0.12.2-stable

version/0.12.3-stable

version/0.12.4-stable

version/0.12.5-stable

version/0.12.6-stable

version/0.12.7-stable

version/0.12.8-stable

version/0.12.9-stable

version/0.13.0-rc1

version/0.13.0-rc2

version/0.13.0-rc3

version/0.13.0-rc4

version/0.13.0-stable

version/0.13.1-stable

version/0.13.2-stable

version/0.13.3-stable

version/0.2.0-beta

version/0.2.1-beta

version/0.2.2-beta

version/0.2.3-beta

version/0.2.4-beta

version/0.2.5-beta

version/0.2.6-beta

version/0.2.7-beta

version/0.2.8-beta

version/0.3.0-beta

version/0.4.0-beta

version/0.4.1-beta

version/0.4.2-beta

version/0.5.0-beta

version/0.6.0-beta

version/0.6.1-beta

version/0.6.2-beta

version/0.6.3-beta

version/0.7.0-beta

version/0.7.1-beta

version/0.7.10-beta

version/0.7.11-beta

version/0.7.12-beta

version/0.7.13-beta

version/0.7.14-beta

version/0.7.15-beta

version/0.7.16-beta

version/0.7.17-beta

version/0.7.2-beta

version/0.7.3-beta

version/0.7.4-beta

version/0.7.5-beta

version/0.7.6-beta

version/0.7.7-beta

version/0.7.8-beta

version/0.7.9-beta

version/0.8.0-beta

version/0.8.1-beta

version/0.8.10-beta

version/0.8.11-beta

version/0.8.12-beta

version/0.8.14-beta

version/0.8.15-beta

version/0.8.2-beta

version/0.8.3-beta

version/0.8.4-beta

version/0.8.5-beta

version/0.8.6-beta

version/0.8.7-beta

version/0.8.8-beta

version/0.8.9-beta

version/0.9.0-pre1

version/0.9.0-pre2

version/0.9.0-pre3

version/0.9.0-pre4

version/0.9.0-pre5

version/0.9.0-pre6

version/0.9.0-pre7

version/0.9.0-rc1

version/0.9.0-rc2

version/0.9.0-stable

version/2021.*

version/2021.1.1-rc1

version/2021.1.1-rc2

version/2021.1.1-stable

version/2021.1.2-stable

version/2021.1.3-stable

version/2021.10.1-rc3

version/2021.10.3

version/2021.10.4

version/2021.12.1

version/2021.12.1-rc1

version/2021.12.1-rc2

version/2021.12.1-rc3

version/2021.12.1-rc4

version/2021.12.1-rc5

version/2021.12.2

version/2021.12.3

version/2021.12.4

version/2021.12.5

version/2021.2.2-stable

version/2021.2.3-stable

version/2021.3.1

version/2021.3.1-rc1

version/2021.3.1-rc2

version/2021.3.2

version/2021.3.3

version/2021.3.4

version/2021.4.1

version/2021.4.1-rc1

version/2021.4.1-rc2

version/2021.5.1

version/2021.5.1-rc10

version/2021.5.1-rc8

version/2021.5.1-rc9

version/2021.5.2

version/2021.6.1

version/2021.6.1-rc1

version/2021.6.1-rc2

version/2021.6.1-rc3

version/2021.6.1-rc4

version/2021.6.3

version/2021.6.4

version/2021.7.1

version/2021.7.1-rc1

version/2021.8.1

version/2021.8.1-rc2

version/2021.8.2

version/2021.8.3

version/2021.8.4

version/2021.9.1

version/2021.9.1-rc1

version/2021.9.1-rc2

version/2021.9.1-rc3

version/2021.9.2

version/2021.9.3

version/2022.*

version/2022.1.1

version/2022.1.3

version/2022.1.4

version/2022.10.1

version/2022.12.0

version/2022.12.1

version/2022.2.1

version/2022.3.3

version/2022.4.1

version/2022.5.1

version/2022.5.2

version/2022.6.2

version/2022.7.2

version/2022.8.1

version/2022.8.2

version/2022.9.0

version/2023.*

version/2023.10.0

version/2023.2.1

version/2023.5.1

version/2023.6.0

version/2023.8.0

version/2023.8.1

version/2023.8.2

version/2025.*

version/2025.12.0

version/2025.12.0-rc1

version/2025.12.0-rc2

version/2025.12.0-rc3

version/2025.12.1

version/2025.12.2

version/2025.12.3

version/2025.12.4

version/2026.*

version/2026.2.0

version/2026.2.0-rc1

version/2026.2.0-rc2

version/2026.2.0-rc3

version/2026.2.0-rc4

version/2026.2.0-rc5

version/2026.2.1

version/2026.2.1-rc1

version/2026.2.2

version/2026.2.2-rc1

version/2026.2.2-rc2

version/2026.2.2-rc3

version/2026.2.3-rc1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40172.json"