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CVE-2026-108865— AmoyLab Unla through 0.10.0 OAuth2 Authentication Bypass via /authorize

Quick assessment

Affected
AmoyLab Unla
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AmoyLab Unla 0.10.0 及更早版本存在认证绕过漏洞，该漏洞允许未认证的攻击者获取有效的访问令牌。原因在于 OAuth2 服务器从未对资源所有者进行身份验证。攻击者可以注册客户端，从 端点请求授权码，然后在 端点将其交换为访问令牌，从而访问受 OAuth2 保护的 MCP 前缀、代理的上游 API 以及注入的凭证。

CVSS 8.2 · High EPSS 0.32% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
AmoyLab Unla ≤ 0.10.0 affected
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I. Basic Information for CVE-2026-108865

Vulnerability Information
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Vulnerability Title
AmoyLab Unla through 0.10.0 OAuth2 Authentication Bypass via /authorize
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AmoyLab Unla 0 ~ 0.10.0 -

II. Public POCs for CVE-2026-108865

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III. Intelligence Information for CVE-2026-108865

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Patches & Fixes for CVE-2026-108865 (2)

Vendor Advisories for CVE-2026-108865 (1)

News Coverage for CVE-2026-108865 (1)

Other References for CVE-2026-108865 (1)

IV. Related Vulnerabilities

Same weakness: CWE-287

V. Comments for CVE-2026-108865

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