{"id":"CVE-2026-111636","published":"2026-10-16T18:17:44.010","lastModified":"2026-10-16T22:17:21.390","description":"OpenBMB StaffDeck through 0.5.6 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge administrator session tokens using the hard-coded default app_secret. Attackers can sign an HMAC-SHA256 token for the seeded 'admin' user in 'tenant_demo' to gain full tenant administration, including stored model and channel credentials.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-321"],"vendors":[],"products":[],"references":[{"url":"https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/config.py#L10","tags":[]},{"url":"https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/security/auth.py#L96-L98","tags":[]},{"url":"https://hackmd.io/@hieuPenguinnn/staffdeck-default-token-signing-secret-auth-bypass","tags":[]},{"url":"https://www.vulncheck.com/advisories/openbmb-staffdeck-through-0.5.6-authentication-bypass-via-hard-coded-session-secret","tags":[]}],"exploitRefs":[{"url":"https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/config.py#L10","tags":[]},{"url":"https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/security/auth.py#L96-L98","tags":[]}],"hasPoc":true,"ai":null}