OpenClaw before 2026.9.4 Authorization Bypass via MCP App Standalone Ticket

Description

OpenClaw before 2026.9.4 contains an incorrect authorization vulnerability in the mcp.app.view method that allows read-scoped operators to execute MCP App tools requiring operator.write scope. Attackers with operator.read tokens can obtain a standalone ticket from mcp.app.view and redeem it at the MCP app view endpoint to invoke state-changing tools without proper authorization checks.

Also Affects

Downstream vendors/products affected by this vulnerability

References

• https://github.com/openclaw/openclaw/pull/142661(issue-tracking, patch)
• https://github.com/openclaw/openclaw/commit/3bd8ec2b39b5f9e80aef0973f7d17eadc745b8f8(patch)
• https://github.com/openclaw/openclaw/blob/1391f7cd2d40ab5bbcf2f5f831d3a64f520e72d7/src/gateway/mcp-app-standalone.ts#L209-L215(technical-description)
• https://docs.openclaw.ai/releases/2026.9.4(release-notes)
• https://github.com/openclaw/openclaw(product)
• https://www.vulncheck.com/advisories/openclaw-before-2026.9.4-authorization-bypass-via-mcp-app-standalone-ticket(third-party-advisory)

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