CVE-2026-108865
AmoyLab Unla through 0.10.0 contains an authentication bypass vulnerability that allows…
- Risk score
- 59/100
- CVSS
- 8.2 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 11 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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-pro…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.2 high
- Remotely exploitable without logging in
References
- https://github.com/AmoyLab/Unla
- 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://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/amoylab-unla-oauth-self-issued-token-authz
- https://www.vulncheck.com/advisories/amoylab-unla-through-0.10.0-oauth2-authentication-bypass-via-authorize
Original 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.
Last activity 11 Oct 2026. Patch Forecast updates every hour.