CVE-2026-111636: critical vulnerability in OpenBMB StaffDeck
OpenBMB StaffDeck through 0.5.6 Authentication Bypass via Hard-Coded Session Secret
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.2epss 0.4%
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.
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
Affected products
OpenBMB · StaffDeckReferences
https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/config.py#L10https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/security/auth.py#L96-L98https://hackmd.io/@hieuPenguinnn/staffdeck-default-token-signing-secret-auth-bypasshttps://www.vulncheck.com/advisories/openbmb-staffdeck-through-0.5.6-authentication-bypass-via-hard-coded-session-secret