← AI agent vulnerabilities

CVE-2026-103758

Obot

8.1
Severity
High
Published
October 1, 2026
Last modified
October 1, 2026

Obot 0.21.1 through 0.24.1 contains an authorization bypass vulnerability that allows authenticated users to reach MCP servers because the checkUI deny list omits the /mcp-connect-composite/ route. Basic-role users with a composite MCP ID can proxy requests through mcpGateway.Proxy to invoke tools on MCP servers restricted by Access Control Rules.

CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness

References

CVE-2026-103758 on NVD

Listed in

HighMCP serversMissing authorization

More Obot CVEs

Sep 27
CVE-2026-1010659.8

The Docker quickstart command documented in the README starts the container listening on 0.0.0.0:8080 with authentication disabled by default.

Sep 27
CVE-2026-1010647.6

Obot before v0.23.0 contains a server-side request forgery vulnerability in remote MCP server registration that allows privileged users to specify arbitrary URLs without destination validation.

Sep 27
CVE-2026-1010635.3

Obot versions before v0.23.0 fail to enforce authentication on MCP Registry endpoints under /v0.1/* when registry authentication is enabled.

Sep 27
CVE-2026-1010628.8

Obot before v0.23.0 (affected versions <= v0.22.1) running with OBOT_SERVER_ENABLE_AUTHENTICATION=true exposes OAuth dynamic client registration without authentication and without any restriction on the…