VulnSocial

CVE-2026-90474Disclosure

LOWCVSS 7.6 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-287

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 1 mentions (2026-09-12); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-09-12: 1Mentions · 2026-09-14: 1Technical Details · 2026-09-12: 1Technical Details · 2026-09-14: 109-1209-14
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • SystemTek - Technology news website@SystemTek_UK
    Disclosure

    MCPHub Authentication Bypass Vulnerability (CVE-2026-90474) https://www.systemtek.co.uk/2026/09/mcphub-authentication-bypass-vulnerability-cve-2026-90474/ via @SystemTek_UK

    Post summary

    The text announces the MCPHub Authentication Bypass vulnerability (CVE-2026-90474) and links to a blog post for further details. No exploit code, PoC, patch, or active exploitation evidence is provided in the tweet itself.

    0000049
    1.8K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-90474 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… https://www.cve.org/CVERecord?id=CVE-2026-90474

    Post summary

    The notice discloses that MCPHub versions prior to 1.0.32 suffer an authentication bypass in their OAuth 2.0 server due to disabled client authentication.

    00000811
    58.1K followersView on X

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