CVE-2026-108865
AmoyLab Unla through 0.10.0 OAuth2 Authentication Bypass via /authorize
AmoyLab Unla
CVSS
8.8HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.32%Chance of exploitation activity in the next 30 days, higher than 24% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- Unlaaffected: all versions through 0.10.0CVE List
References 5
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/amoylab-unla-oauth-self-issued-token-authzAdvisoryvia CVE List
- vulncheck.com/advisories/amoylab-unla-through-0.10.0-oauth2-authentication-bypass-via-authorizeAdvisoryvia CVE List
- github.com/AmoyLab/Unla/blob/v0.10.0/internal/auth/oauth.go#L86-L147Referencevia CVE List
- github.com/AmoyLab/Unla/blob/v0.10.0/internal/core/server.go#L229-L261Referencevia CVE List
- github.com/AmoyLab/UnlaReferencevia CVE List