CVE-2026-111636
OpenBMB StaffDeck through 0.5.6 Authentication Bypass via Hard-Coded Session Secret
OpenBMB StaffDeck
CVSS
9.2CriticalExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.40%Chance of exploitation activity in the next 30 days, higher than 33% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- StaffDeckaffected: all versions through 0.5.6CVE List
References 4
- hackmd.io/@hieuPenguinnn/staffdeck-default-token-signing-secret-auth-bypassAdvisoryvia CVE List
- github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/security/auth.py#L96-L98Advisoryvia CVE List
- vulncheck.com/advisories/openbmb-staffdeck-through-0.5.6-authentication-bypass-via-hard-coded-session-secretAdvisoryvia CVE List
- github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/config.py#L10Referencevia CVE List