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    "cveMetadata": {
        "cveId": "CVE-2026-92087",
        "assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb",
        "state": "PUBLISHED",
        "assignerShortName": "openjs",
        "dateReserved": "2026-09-15T13:56:18.212Z",
        "datePublished": "2026-09-16T14:21:23.686Z",
        "dateUpdated": "2026-09-17T19:10:19.438Z"
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                    "value": "@fastify/auth is a Fastify plugin that composes multiple authentication and authorization strategies into a single route guard. In versions 5.0.0 through 5.1.0, when strategies are composed with the relation \"or\" option together with the run \"all\" option and one entry is a nested array acting as an AND group, the group is evaluated in an order-dependent way: an earlier failing check is silently dropped and the group's result becomes the outcome of its last check. As a result, a request that satisfies only the last member of an AND group, for example an attacker who holds a valid API key but is not an administrator, is authorized instead of rejected, and a related order-dependent bypass affects the mirror configuration where the top-level relation is \"and\" and a nested group uses \"or\". The issue is fixed in @fastify/auth 5.1.1, and users should upgrade to 5.1.1 or later. As a workaround, omit the run \"all\" option where it is not required, order each AND group so its stricter check is evaluated last, or replace nested AND groups with an explicit top-level \"and\" composition.",
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                            "value": "@fastify/auth is a Fastify plugin that composes multiple authentication and authorization strategies into a single route guard. In versions 5.0.0 through 5.1.0, when strategies are composed with the relation \"or\" option together with the run \"all\" option and one entry is a nested array acting as an AND group, the group is evaluated in an order-dependent way: an earlier failing check is silently dropped and the group's result becomes the outcome of its last check. As a result, a request that satisfies only the last member of an AND group, for example an attacker who holds a valid API key but is not an administrator, is authorized instead of rejected, and a related order-dependent bypass affects the mirror configuration where the top-level relation is \"and\" and a nested group uses \"or\". The issue is fixed in @fastify/auth 5.1.1, and users should upgrade to 5.1.1 or later. As a workaround, omit the run \"all\" option where it is not required, order each AND group so its stricter check is evaluated last, or replace nested AND groups with an explicit top-level \"and\" composition."
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                            "versionType": "semver",
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                            "version": "5.0.0",
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            "references": [
                {
                    "url": "https://github.com/fastify/fastify-auth/security/advisories/GHSA-7h52-2rwr-m76r"
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                {
                    "url": "https://cna.openjsf.org/security-advisories.html"
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                    "type": "reporter",
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                    "lang": "en",
                    "type": "remediation developer",
                    "value": "UlisesGascon"
                },
                {
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                    "type": "remediation reviewer",
                    "value": "mcollina"
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            "title": "@fastify/auth vulnerable to Authorization Bypass via order-dependent evaluation of composed auth",
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                                "timestamp": "2026-09-17T19:10:08.336484Z",
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