{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111636","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-16T14:31:12.917Z","datePublished":"2026-10-16T17:39:08.257Z","dateUpdated":"2026-10-16T21:19:00.346Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-16T17:39:08.257Z"},"datePublic":"2026-10-15T00:00:00.000Z","title":"OpenBMB StaffDeck through 0.5.6 Authentication Bypass via Hard-Coded Session Secret","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Use of Hard-coded Cryptographic Key","cweId":"CWE-321","type":"CWE"}]}],"affected":[{"vendor":"OpenBMB","product":"StaffDeck","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"0.5.6","status":"affected","versionType":"custom"}],"packageURL":"pkg:github/OpenBMB/StaffDeck","repo":"https://github.com/OpenBMB/StaffDeck"}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.2,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH"}}],"references":[{"url":"https://hackmd.io/@hieuPenguinnn/staffdeck-default-token-signing-secret-auth-bypass","tags":["third-party-advisory"]},{"url":"https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/config.py#L10","tags":["technical-description"]},{"url":"https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/security/auth.py#L96-L98","tags":["technical-description"]},{"name":"VulnCheck Advisory: OpenBMB StaffDeck through 0.5.6 Authentication Bypass via Hard-Coded Session Secret","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openbmb-staffdeck-through-0.5.6-authentication-bypass-via-hard-coded-session-secret"}],"credits":[{"lang":"en","value":"hieuPenguinnn","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-16T20:51:52.034848Z","id":"CVE-2026-111636","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-16T21:19:00.346Z"}}]}}