CVE-2026-85025

Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an unauthenticated attacker to execute arbitrary code and access or modify chat sessions through publicly shared MCP project endpoints due to improper enforcement of public-flow security restrictions and session isolation controls.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Ibm Langflow

Products

Langflow Oss Langflow

CVE-2026-9225

Langflow is vulnerable to unauthorized file system access due to path traversal and missing storage path validation

IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an authenticated attacker to access sensitive files belonging to other users due to improper access control in the File/Read File component. When executing flows through the /api/v1/run/advanced/{flow_id} endpoint, the application allows component inputs to reference storage paths using arbitrary user or flow identifiers without verifying ownership. An attacker with low‑privileged authenticated access can supply a crafted file path pointing to another user’s storage namespace, causing the backend to read and return the contents of files uploaded by other users. This vulnerability bypasses intended authorization checks enforced by the file management API and may result in unauthorized disclosure of sensitive user data.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Ibm Langflow

Products

Langflow Oss Langflow

CVE-2026-84889

A path traversal vulnerability in file handling components could allow an authenticated attacker to write files to arbitrary locations on the server filesystem

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary code due to improper limitation of a pathname to a restricted directory.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Ibm Langflow

Products

Langflow Oss Langflow

CVE-2026-9138

Langflow is vulnerable to arbitrary file write and arbitrary file deletion due to unvalidated paths in file-processing components

IBM Langflow OSS 1.0.0 through 1.11.2 Langflow could allow an authenticated attacker to write arbitrary files to the server due to improper input validation in the SaveToFileComponent. The application constructs local file paths using attacker‑controlled input without sufficient sanitization when handling requests to the /api/v1/run/{flow_id} endpoint. An attacker with low‑privileged authenticated access (such as a valid API key or user session) can supply crafted path values, including absolute paths or path traversal sequences, allowing arbitrary file writes to locations writable by the Langflow process. Successful exploitation may lead to unauthorized file creation or modification, potentially resulting in further compromise depending on the deployment environment.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19303

Langflow is vulnerable to arbitrary file write and arbitrary file deletion due to unvalidated paths in file-processing components

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to delete arbitrary local files or directories due to improper limitation of a pathname to a restricted directory.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-17621

Langflow OSS is affected by arbitrary file read due to path traversal vulnerabilities in file and knowledge base components

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences ( /.. /) to view arbitrary files on the system.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19298

Langflow is vulnerable to remote code execution due to authorization policy bypass in the authenticated flow-build endpoint

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to execute arbitrary code due to an authorization bypass in the flow build process.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-14470

Langflow OSS is affected by arbitrary file read due to path traversal vulnerabilities in file and knowledge base components

IBM Langflow OSS 1.0.0 through 1.10.2 could allow an authenticated attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-17622

Langflow OSS is affected by arbitrary file read due to path traversal vulnerabilities in file and knowledge base components

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain sensitive information due to improper limitation of a pathname to a restricted directory.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-17627

Langflow is affected by improper authorization due to missing access control on the voice-mode WebSocket endpoint

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain sensitive information and inject messages into workflow history due to improper authorization.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-17631

Langflow OSS is affected by server-side request forgery due to missing URL validation in flow components

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain sensitive information due to a server-side request forgery (SSRF) vulnerability.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19299

Langflow is vulnerable to arbitrary local file read due to path traversal in ChatInput, bundle FileInput, and GitExtractor components

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to obtain sensitive information due to path traversal.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19300

Langflow is vulnerable to information disclosure due to cross-user MCP tool cache collision and incomplete secret scrubbing on public flows

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote attacker to obtain sensitive information due to incomplete scrubbing of sensitive credential fields.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19301

Langflow is vulnerable to Server-Side Request Forgery due to missing or bypassable URL validation in multiple components

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to obtain sensitive information due to server-side request forgery.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19302

Langflow is vulnerable to arbitrary local file read due to path traversal in ChatInput, bundle FileInput, and GitExtractor components

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to obtain sensitive information due to improper validation of symbolic links.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19304

Langflow is vulnerable to Server-Side Request Forgery due to missing or bypassable URL validation in multiple components

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to obtain sensitive information from internal services due to a URL parser discrepancy.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19305

Langflow is vulnerable to Server-Side Request Forgery due to missing or bypassable URL validation in multiple components

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote attacker to obtain sensitive information due to server-side request forgery.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-19306

Langflow is vulnerable to arbitrary local file read due to path traversal in ChatInput, bundle FileInput, and GitExtractor components

IBM Langflow OSS 1.0.0 through 1.11.2 allows an authenticated attacker to read arbitrary files from the server filesystem — including server secret material (secret_key, JWT signing keys, the application database, /proc/self/environ, and other tenants' upload directories) — by supplying absolute paths or traversal sequences in the files parameter of an authenticated build request. The file contents were embedded as text attachments in the language model prompt and transmitted to the configured model endpoint, resulting in confidential data exfiltration. This bypassed the LANGFLOW_RESTRICT_LOCAL_FILE_ACCESS=true containment boundary, which was enforced for other file-reading components but not for the Chat Input to Message attachment pipeline.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-8447

Langflow is vulnerable to stored cross-site scripting and IP spoofing due to unsanitized Markdown rendering and untrusted proxy header trust

IBM Langflow OSS 1.0.0 through 1.11.2 suffer from a stored cross-site scripting vulnerability in the Playground chat interface.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more

CVE-2026-9186

Langflow is vulnerable to stored cross-site scripting and IP spoofing due to unsanitized Markdown rendering and untrusted proxy header trust

IBM Langflow OSS 1.0.0 through 1.11.2 allows remote authenticated attackers to bypass localhost-only MCP configuration installation by spoofing X-Forwarded-For: 127.0.0.1 header, enabling arbitrary writes to IDE config files (~/.cursor/mcp.json, etc.).

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple Ibm Langflow and 2 more

Products

Macos Langflow Oss Langflow and 2 more