Authorization Bypass in Obot Product from Vendor Obot
CVE-2026-103758

8.6HIGH

Key Information:

Vendor

Obot-platform

Status
Obot
Vendor
CVE Published:
1 October 2026

What is CVE-2026-103758?

The affected versions of the Obot product contain an authorization bypass flaw, allowing authenticated users to access MCP servers. This occurs due to the omission of the /mcp-connect-composite/ route from the checkUI deny list. Users with a basic role who possess a composite MCP ID can exploit this vulnerability to proxy requests through mcpGateway.Proxy, enabling them to invoke tools on MCP servers that should be restricted by Access Control Rules, potentially compromising sensitive operations.

Affected Version(s)

obot 0.21.1 <= 0.24.1

References

https://github.com/obot-platform/obot/security/advisories...
vendor-advisory
https://www.vulncheck.com/advisories/obot-0.21.1-through-...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

arpitjain099
.