Vulnerability · Published Oct 1, 2026 · Assigned by VulnCheck
CVE-2026-103758Obot 0.21.1 through 0.24.1 Authorization Bypass via /mcp-connect-composite/ Route
High 8.1
In plain English
A high-severity incorrect authorization in obot from obot-platform. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.2%top 87.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| obot-platform | obot | 0.21.1 – through 0.24.1 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-6fwv-3h4c-37j9) vendor-advisory
- VulnCheck Advisory: Obot 0.21.1 through 0.24.1 Authorization Bypass via /mcp-connect-composite/ Route third-party-advisory