CVE Catalog

CVE-2026-108865

HighCVSS 8.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.32%

24th percentile - higher than 24% of all known CVEs

Summary

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.

Risk Assessment

The risk of unauthorized access to protected resources and sensitive data can lead to confidentiality and integrity breaches. An attacker can also obtain credentials and use them for further attacks.

Recommendation

It is recommended to immediately upgrade Unla to a version newer than 0.10.0 and implement proper resource owner authentication in the OAuth2 server. Also review OAuth2 configuration and restrict access to sensitive resources.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS