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CVE-2026-108856— UnicomAI Wanwu through 0.6.5 Authorization Bypass via /v1/appspace/app/key AppKey Minting

Quick assessment

Affected
UnicomAI Wanwu
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.

UnicomAI Wanwu 版本 0.6.5 及之前版本存在一个授权绕过漏洞，允许已认证的用户通过 POST /v1/appspace/app/key 接口，为其关联到其他用户的 MCP 服务器铸造 AppKeys。攻击者通过传入受害者 MCP 服务器的 UUID，并设置 appType 为 mcpserver，即可打开 MCP 会话并使用受害者的上游认证来调用该服务器的工具。

CVSS 4.2 · Medium EPSS 0.22% · P12

Affected Version Matrix 1

VendorProduct Version RangeStatus
UnicomAI Wanwu ≤ 0.6.5 affected
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I. Basic Information for CVE-2026-108856

Vulnerability Information
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Vulnerability Title
UnicomAI Wanwu through 0.6.5 Authorization Bypass via /v1/appspace/app/key AppKey Minting
Source: CVE Program / CVE List V5
Vulnerability Description
UnicomAI Wanwu through 0.6.5 contains an authorization bypass vulnerability that allows authenticated users to mint AppKeys bound to other users' MCP servers via POST /v1/appspace/app/key. Attackers supplying a victim's MCP server UUID with appType mcpserver can open MCP sessions and invoke the server's tools using the victim's upstream authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
UnicomAI Wanwu 0 ~ 0.6.5 -

II. Public POCs for CVE-2026-108856

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-108856

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Patches & Fixes for CVE-2026-108856 (2)

Security Blog Posts for CVE-2026-108856 (1)

News Coverage for CVE-2026-108856 (1)

Same Patch Batch · UnicomAI · 2026-10-11 · 4 CVEs total

CVE-2026-108853 8.1 HIGH UnicomAI Wanwu before 0.6.3 IDOR via DELETE /v1/appspace/app
CVE-2026-108855 5.4 MEDIUM UnicomAI Wanwu through 0.6.5 Missing Authorization via DELETE /v1/appspace/app/publish
CVE-2026-108854 5.4 MEDIUM Wanwu before 0.6.3 IDOR AppKey Deletion via DELETE /v1/appspace/app/key

IV. Related Vulnerabilities

Same product: Wanwu
Same vendor: UnicomAI
Same weakness: CWE-639

V. Comments for CVE-2026-108856

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