CVE-2026-55255-Lab

CVE-2026-55255 - Langflow의 /api/v1/responses IDOR 취약점 핵심 요약 이 저장소는 Langflow의 OpenAI 호환 Responses API에 영향을 미치는 안전하지 않은 직접 객체 참조IDOR 취약점인 CVE-2026-55255를 재현하고 검증하기 위한 로컬 Docker 랩을 포함합니다. Langflow는 AI 기반 에이전트와 워크플로우를 구축하고 배포하기 위한 오픈소스 플랫폼입니다. 취약한 동작은 /api/v1/responses 엔드포인트에 영향을 미치며, 인증된 공격자가 다른 사용자...

EUVD-2026-71122

OGX formerly Llama Stack, affected at commit fbe8e0f contains an unauthenticated server-side request forgery vulnerability in the OpenAI-compatible POST /v1/responses endpoint. MCP tool definitions accept a serverurl parameter along with headers and authorization values that is fetched server-sid...

CVE-2026-85666 ogx 1.3.1 Server-Side Request Forgery via MCP tool server_url

OGX formerly Llama Stack, affected at commit fbe8e0f contains an unauthenticated server-side request forgery vulnerability in the OpenAI-compatible POST /v1/responses endpoint. MCP tool definitions accept a serverurl parameter along with headers and authorization values that is fetched server-sid...

Open WebUI's responses passthrough endpoint lacks access control authorization

SummaryThe /responses endpoint in the OpenAI router accepts any authenticated user and forwards requests directly to upstream LLM providers without enforcing per-model access control. While the primary chat completion endpoint generatechatcompletion checks model ownership, group membership, and...

Langflow < 1.9.1 Multiple Vulnerabilities

The version of Langflow installed on the remote host is prior to 1.9.1. It is, therefore, affected by multiple vulnerabilities: - An Insecure Direct Object Reference IDOR vulnerability in the /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user...

VulnCheck KEV: CVE-2026-55255

Langflow contains an authorization bypass through user-controlled key vulnerability which allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request...

PYSEC-0000-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...

PYSEC-2026-221

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...

PYSEC-2026-221

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...

EUVD-2026-38517

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...

CVE-2026-55255 Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, 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...

CVE-2026-55255

Summary of technical details : CVE-2026-55255 is an IDOR in Langflow prior to version 1.9.1 where an authenticated user could trigger a victim’s flow by supplying the victim’s flow UUID to the /api/v1/responses endpoint. The root cause is in get_flow_by_id_or_endpoint_name(), which could load a F...

CVE-2026-55255 Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, 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...

CVE-2026-55255 Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, 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...

GHSA-QRPV-Q767-XQQ2 Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow

Summary 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. Details The vulnerability exists in the getflowbyidorendpointname helper...

Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow

Summary 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. Details The vulnerability exists in the getflowbyidorendpointname helper...

PT-2026-51099

Name of the Vulnerable Software and Affected Versions Langflow versions prior to 1.9.1 Description An Insecure Direct Object Reference IDOR issue exists in the /api/v1/responses endpoint. This occurs because the get flow by id or endpoint name function queries the database using a flow ID without...

CVE-2026-44556

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the /responses endpoint in the OpenAI router accepts any authenticated user and forwards requests directly to upstream LLM providers without enforcing per-model access control. While...

CVE-2026-44556

Open WebUI vulnerability CVE-2026-44556 affects the /api/openai/responses endpoint, where the proxy forwards requests to upstream LLMs without enforcing per-model access control. Pre-0.9.0, any authenticated user could interact with any configured model by POSTing to /responses with an arbitrary ...

EUVD-2026-30624

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the /responses endpoint in the OpenAI router accepts any authenticated user and forwards requests directly to upstream LLM providers without enforcing per-model access control. While...