[ CVE-2026-108865 · Published 11 Oct 2026 ]
Vulnerability in AmoyLab Unla
CVSS 8.2
EPSS <1%No fix listed yet
[ Description ]Official 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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ References ]References
- github.com/AmoyLab/Unla
- github.com/AmoyLab/Unla/blob/v0.10.0/internal/auth/oauth.go
- github.com/AmoyLab/Unla/blob/v0.10.0/internal/core/server.go
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/amoylab-unla-oauth-self-issued-token-authz
- www.vulncheck.com/advisories/amoylab-unla-through-0.10.0-oauth2-authentication-bypass-v…