{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-48228",
        "ASSIGNER": "security-advisories@github.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "authentik is an open-source identity provider. When initialising a oauth2 flow with a `code_challenge` and `code_method` (thus requesting PKCE), the single sign-on provider (authentik) must check if there is a matching and existing `code_verifier` during the token step. Prior to versions 2023.10.4 and 2023.8.5, authentik checks if the contents of `code_verifier` is matching only when it is provided. When it is left out completely, authentik simply accepts the token request with out it; even when the flow was started with a `code_challenge`. authentik 2023.8.5 and 2023.10.4 fix this issue."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-287: Improper Authentication",
                        "cweId": "CWE-287"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "goauthentik",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "authentik",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "< 2023.10.4"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "< 2023.8.5"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/security/advisories/GHSA-fm34-v8xq-f2c3"
            },
            {
                "url": "https://github.com/goauthentik/authentik/pull/7666",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/pull/7666"
            },
            {
                "url": "https://github.com/goauthentik/authentik/pull/7668",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/pull/7668"
            },
            {
                "url": "https://github.com/goauthentik/authentik/pull/7669",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/pull/7669"
            },
            {
                "url": "https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/commit/3af77ab3821fe9c7df8055ba5eade3d1ecea03a6"
            },
            {
                "url": "https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/commit/6b9afed21f7c39f171a4a445654cfe415bba37d5"
            },
            {
                "url": "https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/commit/b88e39411c12e3f9e04125a7887f12354f760a14"
            },
            {
                "url": "https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/blob/dd4e9030b4e667d3720be2feda24c08972602274/authentik/providers/oauth2/views/token.py#L225"
            },
            {
                "url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/releases/tag/version%2F2023.10.4"
            },
            {
                "url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5",
                "refsource": "MISC",
                "name": "https://github.com/goauthentik/authentik/releases/tag/version%2F2023.8.5"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-fm34-v8xq-f2c3",
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
            }
        ]
    }
}