{"schema":"threatline.record/2","record":{"id":"CVE-2026-111636","aliases":[],"summary":"OpenBMB StaffDeck through 0.5.6 Authentication Bypass via Hard-Coded Session Secret","details":"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.","categories":["Unclassified"],"product":"StaffDeck","vendor":"OpenBMB","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111636","source_modified_at":"2026-10-16T21:19:00.346Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"StaffDeck","vendor":"OpenBMB","versions":[{"version":"0","lessThanOrEqual":"0.5.6","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.2,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00402,"percentile":0.33308,"score_date":"2026-10-23"},"published_at":"2026-10-16T17:39:08.257Z","modified_at":"2026-10-16T21:19:00.346Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111636","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T21:19:00.346Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111636","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@hieuPenguinnn/staffdeck-default-token-signing-secret-auth-bypass","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/config.py#L10","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/security/auth.py#L96-L98","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/openbmb-staffdeck-through-0.5.6-authentication-bypass-via-hard-coded-session-secret","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-16T20:51:52.034848Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T21:19:00.346Z","content_hash":"fb6796bec57febcf8b2fdf020d6e10fea518b12b09a8306563295475e30b0374"}}