CVE-2026-90474 (GCVE-0-2026-90474)
Vulnerability from cvelistv5
Published
2026-09-12 11:06
Modified
2026-09-24 14:21
Severity ?
7.6 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
6.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE
  • CWE-287 - Improper Authentication
Summary
MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is disabled by default and PKCE enforcement is optional. Attackers who obtain an authorization code through interception can redeem it for access tokens without providing a client secret or PKCE verifier, gaining access to victim accounts and their privileges.
References
Impacted products
Vendor Product Version
samanhappy mcphub Version: 0   ≤
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