CVE-2026-92087
- Source
- https://cve.org/CVERecord?id=CVE-2026-92087
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92087.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-92087
- Aliases
-
- GHSA-7h52-2rwr-m76r
- Published
- 2026-09-16T14:21:23Z
- Modified
- 2026-09-19T03:30:50Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- @fastify/auth vulnerable to Authorization Bypass via order-dependent evaluation of composed auth
- Details
-
@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.
- Database specific
{ "cna_assigner": "openjs", "cwe_ids": [ "CWE-285", "CWE-697" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92087.json" }- References