CVE-2026-103758

High

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.

SeverityHigh

CVSS8.1

Exploit probability—

ProductObot

PublishedOct 1, 2026

First seenOct 1, 2026

Weakness typeCWE-863Incorrect authorization

How to fix

Vendor advisories

github.com/obot-platform/obot/security/advisories/GHSA-6fwv-3h4c-37j9

Affected products

Product	Affected versions	Fixed in
obot-platform obot	0.21.1 ≤ v ≤ 0.24.1	—

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