{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "0.5.6"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "7adc7c84f61bd6cca13ff0380a811cbb3ae3c544"
            }
          ],
          "repo": "https://github.com/openbmb/staffdeck",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-321"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111636.json"
  },
  "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.",
  "id": "CVE-2026-111636",
  "modified": "2026-10-17T10:30:25.536266144Z",
  "published": "2026-10-16T17:39:08.257Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111636.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/OpenBMB/StaffDeck"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/config.py#L10"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/OpenBMB/StaffDeck/blob/v0.5.6/backend/app/security/auth.py#L96-L98"
    },
    {
      "type": "ADVISORY",
      "url": "https://hackmd.io/@hieuPenguinnn/staffdeck-default-token-signing-secret-auth-bypass"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111636"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/openbmb-staffdeck-through-0.5.6-authentication-bypass-via-hard-coded-session-secret"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenBMB StaffDeck through 0.5.6 Authentication Bypass via Hard-Coded Session Secret"
}