CVE-2026-53709CWE-1188CWE-287CWE-321CWE-798hardcoded-credentials

CVE-2026-53709

Critical · published October 13, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
48.2
In the wild
Unconfirmed
What it is

MCP Context Forge is an MCP gateway and administrative platform. Prior to 1.0.2, mcpgateway/config.py and .env.example ship a known JWT_SECRET_KEY, while verify_jwt_token() accepts HS256 tokens signed with that key and get_current_user() creates a platform administrator when the token subject matches PLATFORM_ADMIN_EMAIL and REQUIRE_USER_IN_DB is false. A remote unauthenticated attacker can therefore mint accepted administrator tokens without a database account. While the vulnerable signing key remains configured and the platform-admin bootstrap remains enabled, forged access survives password rotation, account deletion, and session revocation, allowing administrative disclosure, modification, and service disruption. This issue is fixed in version 1.0.2.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00603 · 48.2th percentile
Weaknesses
CWE-1188 · Initialization of a Resource with an Insecure Default; CWE-287 · Improper Authentication; CWE-321 · Use of Hard-coded Cryptographic Key; CWE-798 · Use of Hard-coded Credentials
Published
2026-10-13T19:17Z
References (3)
EPSS history
Timeline
  • 15 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 13 OCT 14:32Z
    MCP Context Forge: Hardcoded default JWT_SECRET_KEY shipped in source and .env.example enables pre-authentication platform admin token forgery
    cvelistv5
  • 13 OCT 14:32Z
    MCP Context Forge: Hardcoded default JWT_SECRET_KEY shipped in source and .env.example enables pre-authentication platform admin token forgery
    cvelistv5