CVE-2026-101084: Authorization Bypass Through User-Controlled Key in obot-platform obot
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.
AI Analysis
Technical Summary
obot versions prior to 0.21.1 do not properly enforce access control rules on the /mcp-connect endpoint. An authenticated user who knows a server ID can bypass authorization checks to connect to restricted MCP servers. This vulnerability allows attackers to access and manipulate sensitive backend systems through MCP tool calls leveraging stored OAuth credentials. The CVSS 4.0 score is 9.3, indicating a critical severity with network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and system availability.
Potential Impact
Exploitation of this vulnerability enables attackers with valid authentication to bypass authorization controls and gain unauthorized access to restricted MCP servers. This can result in unauthorized manipulation of sensitive backend systems, potentially compromising confidentiality, integrity, and availability of critical resources.
Mitigation Recommendations
A fix is available in obot version 0.21.1. Users should upgrade to version 0.21.1 or later to remediate this vulnerability. No additional mitigation steps are indicated in the provided data.
CVE-2026-101084: Authorization Bypass Through User-Controlled Key in obot-platform obot
Description
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.
CVSS v4.0
Score 9.3critical
Affected software
obot-platform
obot
pkg:github/obot-platform/obotRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
obot versions prior to 0.21.1 do not properly enforce access control rules on the /mcp-connect endpoint. An authenticated user who knows a server ID can bypass authorization checks to connect to restricted MCP servers. This vulnerability allows attackers to access and manipulate sensitive backend systems through MCP tool calls leveraging stored OAuth credentials. The CVSS 4.0 score is 9.3, indicating a critical severity with network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and system availability.
Potential Impact
Exploitation of this vulnerability enables attackers with valid authentication to bypass authorization controls and gain unauthorized access to restricted MCP servers. This can result in unauthorized manipulation of sensitive backend systems, potentially compromising confidentiality, integrity, and availability of critical resources.
Mitigation Recommendations
A fix is available in obot version 0.21.1. Users should upgrade to version 0.21.1 or later to remediate this vulnerability. No additional mitigation steps are indicated in the provided data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-27T20:29:07.432Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab98494f7a7c541067b976a
Added to database: 09/27/2026, 21:03:16 UTC
Last enriched: 09/27/2026, 21:17:52 UTC
Last updated: 09/28/2026, 01:57:30 UTC
Views: 8
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