CVE-2026-108856

low

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.

References

https://www.vulncheck.com/advisories/unicomai-wanwu-through-0.6.5-authorization-bypass-via-v1-appspace-app-key-appkey-minting

https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/unicomai-wanwu-mcp-key-arbitrary-resource

https://github.com/UnicomAI/wanwu/blob/v0.6.5/internal/bff-service/server/http/middleware/auth_openapi.go#L46-L70

https://github.com/UnicomAI/wanwu/blob/v0.6.5/internal/app-service/client/orm/app_key.go#L37-L49

https://github.com/UnicomAI/wanwu

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97007

Details

Source: Mitre, NVD

Published: 2026-10-11

Updated: 2026-10-11

Risk Information

CVSS v2

Base Score: 3.6

Vector: CVSS2#AV:N/AC:H/Au:S/C:P/I:P/A:N

Severity: Low

CVSS v3

Base Score: 4.2

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 2.3

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Severity: Low