{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2025-25205",
        "ASSIGNER": "security-advisories@github.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Audiobookshelf is a self-hosted audiobook and podcast server. Starting in version 2.17.0 and prior to version 2.19.1, a flaw in the authentication bypass logic allows unauthenticated requests to match certain unanchored regex patterns in the URL. Attackers can craft URLs containing substrings like \"/api/items/1/cover\" in a query parameter (?r=/api/items/1/cover) to partially bypass authentication or trigger server crashes under certain routes. This could lead to information disclosure of otherwise protected data and, in some cases, a complete denial of service (server crash) if downstream code expects an authenticated user object. Version 2.19.1 contains a patch for the issue."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-202: Exposure of Sensitive Information Through Data Queries",
                        "cweId": "CWE-202"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-287: Improper Authentication",
                        "cweId": "CWE-287"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-400: Uncontrolled Resource Consumption",
                        "cweId": "CWE-400"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "advplyr",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "audiobookshelf",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": ">= 2.17.0, < 2.19.1"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-pg8v-5jcv-wrvw",
                "refsource": "MISC",
                "name": "https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-pg8v-5jcv-wrvw"
            },
            {
                "url": "https://github.com/advplyr/audiobookshelf/pull/3584",
                "refsource": "MISC",
                "name": "https://github.com/advplyr/audiobookshelf/pull/3584"
            },
            {
                "url": "https://github.com/advplyr/audiobookshelf/commit/bf8407274e3ee300af1927ee660d078a7a801e1c",
                "refsource": "MISC",
                "name": "https://github.com/advplyr/audiobookshelf/commit/bf8407274e3ee300af1927ee660d078a7a801e1c"
            },
            {
                "url": "https://github.com/advplyr/audiobookshelf/commit/ec6537656925a43871b07cfee12c9f383844d224",
                "refsource": "MISC",
                "name": "https://github.com/advplyr/audiobookshelf/commit/ec6537656925a43871b07cfee12c9f383844d224"
            },
            {
                "url": "https://github.com/advplyr/audiobookshelf/blob/1a3d70d04100924d41391acb55bd8ddca486a4fa/server/Auth.js#L17-L41",
                "refsource": "MISC",
                "name": "https://github.com/advplyr/audiobookshelf/blob/1a3d70d04100924d41391acb55bd8ddca486a4fa/server/Auth.js#L17-L41"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-pg8v-5jcv-wrvw",
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.2,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                "version": "3.1"
            }
        ]
    }
}