{"id":"CVE-2026-111636","revision":"136e560816974017a489330fd10addd3","records":[{"revision":"136e560816974017a489330fd10addd3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111636","aliases":[],"title":"OpenBMB StaffDeck through 0.5.6 Authentication Bypass via Hard-Coded Session Secret","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.","state":0,"publishedAt":"2026-10-16T17:39:08.257+00:00","modifiedAt":"2026-10-16T21:19:00.346+00:00","affected":[{"ecosystem":"Vendor product","name":"StaffDeck","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"OpenBMB\",\n                    \"product\": \"StaffDeck\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"0.5.6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/OpenBMB/StaffDeck\",\n                    \"repo\": \"https://github.com/OpenBMB/StaffDeck\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.2,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1,"severity":"HIGH"}],"references":["https://hackmd.io/@hieuPenguinnn/staffdeck-default-token-signing-secret-auth-bypass","https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/config.py#L10","https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/security/auth.py#L96-L98","https://www.vulncheck.com/advisories/openbmb-staffdeck-through-0.5.6-authentication-bypass-via-hard-coded-session-secret"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111636","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111636","identifiers":["CVE-2026-111636"]},"retained":false,"historicalAffected":[]}],"coverage":[]}