Auth bypass in Unicomai Wanwu
CVE-2026-108854
Wanwu before 0.6.3 contains an insecure direct object reference vulnerability that allows any authenticated enabled user to delete other users' legacy AppKeys by supplying a numeric apiId. Attackers can iterate sequential key IDs against DELETE /v1/appspace/app/key to revoke AppKeys across organizations, breaking MCP and OpenAPI clients until owners issue new keys.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/unicomai-wanwu-appkey-delete-id-bola (third-party-advisory)
- github.com/UnicomAI/wanwu/blob/v0.6.2/internal/app-service/client/orm/app_key.go (technical-description)
- github.com/UnicomAI/wanwu/commit/13d0b225ec237d5a0b44730b2331efadaeb462a2 (patch)
- github.com/UnicomAI/wanwu/releases/tag/v0.6.3 (release-notes)
- github.com/UnicomAI/wanwu (product)
- www.vulncheck.com/advisories/wanwu-before-0.6.3-idor-appkey-deletion-via-delete… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108854?
- CVE-2026-108854 is a medium-severity vulnerability in Unicomai Wanwu, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-10-11.
- How severe is CVE-2026-108854?
- Medium severity. CVSS v3 base score is 5.4 out of 10.