CVE-2026-90474MCPHub before 1.0.32 OAuth 2.0 Authentication Bypass
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 6.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
samanhappy mcphub samanhappy:mcphub (from the name) | before 1.0.32 | CNA record |
References
- https://github.com/samanhappy/mcphub/security/advisories/GHSA-3m7m-37xf-xp9xthird-party-advisory, vendor-advisory
- https://github.com/samanhappy/mcphub/commit/e927620cd1a80e8691213b01eb8cd6ffa1a66e9fpatch
- https://github.com/samanhappy/mcphub/blob/v1.0.31/src/services/oauthServerService.ts#L26-L38technical-description
- https://github.com/samanhappy/mcphub/releases/tag/v1.0.32release-notes
- https://www.vulncheck.com/advisories/mcphub-before-1.0.32-oauth-2.0-authentication-bypassthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.