{"id":"CVE-2026-108865","revision":"7c64a22c31b14d5cbaf6740454e740c3","records":[{"revision":"7c64a22c31b14d5cbaf6740454e740c3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-108865","aliases":[],"title":"AmoyLab Unla through 0.10.0 OAuth2 Authentication Bypass via /authorize","description":"AmoyLab Unla through 0.10.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain valid access tokens because the OAuth2 server never authenticates a resource owner. Attackers can register a client, request a code from /authorize, and exchange it at /token to access OAuth2-protected MCP prefixes, proxied upstream APIs and injected credentials.","state":0,"publishedAt":"2026-10-11T13:26:10.714+00:00","modifiedAt":"2026-10-14T16:48:20.518+00:00","affected":[{"ecosystem":"Vendor product","name":"Unla","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"AmoyLab\",\n                    \"product\": \"Unla\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"0.10.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:golang/github.com/amoylab/unla\",\n                    \"repo\": \"https://github.com/AmoyLab/Unla\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","score":8.8,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2,"severity":"HIGH"}],"references":["https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/amoylab-unla-oauth-self-issued-token-authz","https://github.com/AmoyLab/Unla/blob/v0.10.0/internal/auth/oauth.go#L86-L147","https://github.com/AmoyLab/Unla/blob/v0.10.0/internal/core/server.go#L229-L261","https://github.com/AmoyLab/Unla","https://www.vulncheck.com/advisories/amoylab-unla-through-0.10.0-oauth2-authentication-bypass-via-authorize"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108865","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-108865","identifiers":["CVE-2026-108865"]},"retained":false,"historicalAffected":[]}],"coverage":[]}