---
id: CVE-2026-101084
title: >-
  obot versions before v0.21.1 fail to enforce Access Control Rules on the
  /mcp-connect endpoint, allowing any authenticated user to connect to
  restricted MCP servers if they possess the server ID
summary: >-
  obot versions before v0.21.1 fail to enforce Access Control Rules on the
  /mcp-connect endpoint, allowing any authenticated user to connect to
  restricted MCP servers if they possess the server ID. Attackers can bypass
  authorization checks…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N'
cwe:
  - CWE-639
vendor: obot-platform
product: obot
affected:
  - obot < 0.21.1
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T21:17:02.163'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101084'
references:
  - url: >-
      https://github.com/obot-platform/obot/security/advisories/GHSA-vw82-7fv8-r6gp
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/obot-before-0.21.1-authorization-bypass-via-mcp-connect
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-27T20:58:01.543Z'
---

## Overview

obot versions before v0.21.1 fail to enforce Access Control Rules on the /mcp-connect endpoint, allowing any authenticated user to connect to restricted MCP servers if they possess the server ID. Attackers can bypass authorization checks to access and manipulate sensitive backend systems through MCP tool calls using stored OAuth credentials.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.