High severity8.2NVD Advisory· Published Oct 11, 2026
CVE-2026-108865
CVE-2026-108865
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.
Affected products
1Patches
Vulnerability mechanics
References
4- github.com/AmoyLab/Unla/blob/v0.10.0/internal/auth/oauth.gonvd
- github.com/AmoyLab/Unla/blob/v0.10.0/internal/core/server.gonvd
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/amoylab-unla-oauth-self-issued-token-authznvd
- www.vulncheck.com/advisories/amoylab-unla-through-0.10.0-oauth2-authentication-bypass-via-authorizenvd
News mentions
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