{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-25748",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-02-05T18:35:52.356Z",
        "datePublished": "2026-02-12T19:36:45.631Z",
        "dateUpdated": "2026-02-17T15:53:01.301Z"
    },
    "containers": {
        "cna": {
            "title": "authentik has a forward authentication bypass with broken cookie",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-287",
                            "lang": "en",
                            "description": "CWE-287: Improper Authentication",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 8.6,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/goauthentik/authentik/security/advisories/GHSA-fj56-5763-j8pp",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/goauthentik/authentik/security/advisories/GHSA-fj56-5763-j8pp"
                },
                {
                    "name": "https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4"
                },
                {
                    "name": "https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4"
                }
            ],
            "affected": [
                {
                    "vendor": "goauthentik",
                    "product": "authentik",
                    "versions": [
                        {
                            "version": ">= 2025.10.0-rc1, < 2025.10.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2025.10.0-rc1, < 2025.12.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-02-12T19:36:45.631Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "authentik is an open-source identity provider. Prior to 2025.10.4 and 2025.12.4, with a malformed cookie it was possible to bypass authentication when using forward authentication in the authentik Proxy Provider when used in conjunction with Traefik or Caddy as reverse proxy. When a malicious cookie was used, none of the authentik-specific X-Authentik-* headers were set which depending on application can grant access to an attacker. authentik 2025.10.4 and 2025.12.4 fix this issue."
                }
            ],
            "source": {
                "advisory": "GHSA-fj56-5763-j8pp",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-02-17T15:52:54.989237Z",
                                "id": "CVE-2026-25748",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-02-17T15:53:01.301Z"
                }
            }
        ]
    }
}