{"id":"CVE-2026-108865","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-108865","summary":"AmoyLab Unla through 0.10.0 OAuth2 Authentication Bypass via /authorize","details":"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.","published":"2026-10-11T13:26:10.714Z","modified":"2026-10-12T02:45:22.127528580Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"PACKAGE","url":"https://github.com/AmoyLab/Unla"},{"type":"ARTICLE","url":"https://github.com/AmoyLab/Unla/blob/v0.10.0/internal/auth/oauth.go#L86-L147"},{"type":"ARTICLE","url":"https://github.com/AmoyLab/Unla/blob/v0.10.0/internal/core/server.go#L229-L261"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108865.json"},{"type":"ADVISORY","url":"https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/amoylab-unla-oauth-self-issued-token-authz"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108865"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/amoylab-unla-through-0.10.0-oauth2-authentication-bypass-via-authorize"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-12T02:45:22.127528580Z"}}