# CVE-2026-55255

> Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.2, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.2.

- **CVSS:** 9.9 (CRITICAL)
- **EPSS:** 0.2%
- **CWE:** CWE-639

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-55255
Full threat coverage + IOCs via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp