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...

Security Bulletin: Unauthenticated Flow Execution via Webhook Endpoint in Langflow OSS

Summary Langflow OSS POST /api/v1/webhook/flowid executes any user's flow without authentication by default. Setting WEBHOOKAUTHENABLE defaults to False in auth configuration. When False, webhook handler calls getuserbyflowidorendpointname and trusts caller unconditionally with no credential chec...

CVE-2026-7787

CVE-2026-7787 affects Langflow OSS versions 1.0.0–1.9.1. A session ID namespace bypass in the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint allows unauthenticated attackers to read or modify chat history by overriding the session_id used during flow execution when a PUBLIC flow includes a...

CVE-2026-7787 Unauthenticated Session History Access via Public Flow Execution

IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references...

CVE-2026-7787 Unauthenticated Session History Access via Public Flow Execution

IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references...

EUVD-2022-0596

Malicious code in bioql PyPI...