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OpenAdvisories

Product · IBM

Langflow OSS

177 known vulnerabilities.

177 results · Feed

  • High 8.8

    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.

  • Critical 9.8

    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 …

  • Medium 6.5

    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…

  • Medium 6.5

    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.

  • Medium 4.9

    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.

  • Medium 5.4

    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.

  • Medium 6.5

    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.

  • Medium 5.0

    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.

  • High 8.8

    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.

  • Medium 5.0

    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.

  • High 8.1

    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.

  • High 7.5

    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.

  • Medium 6.5

    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.

  • Medium 6.5

    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.

  • High 7.7

    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.

  • High 8.6

    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.

  • High 7.7

    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…

  • Medium 6.5

    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 inpu…

  • Medium 6.1

    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.

  • Medium 6.5

    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.).

  • Critical 9.9
    CVE-2026-19295 Public exploit

    Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement

    IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allo…

  • Medium 6.4

    Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

    IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote authenticated attacker to execute and read any user's private flow due to improper authorization.

  • Critical 9.8
    CVE-2026-19286 Public exploit

    Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement

    IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary code due to improper enforcement of security restrictions on the A2A public endpoint.

  • High 8.2

    Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

    IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers.

  • High 7.5

    Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

    IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal.

  • High 8.2

    Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

    IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.

  • High 8.8
    CVE-2026-18729 Public exploit

    Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement

    IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote authenticated attacker to execute arbitrary code due to improper control of generation of code.

  • Medium 4.3

    Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

    IBM Langflow OSS 1.0.0 through 1.11.1 is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.

  • High 7.5

    Unauthenticated Registration POST Endpoint Permits Admin Email Overwrite and Outbound Relay Abuse in Langflow

    IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to overwrite administrator email information and abuse the server as an outbound relay due to missing authentication for the registration endpoint.

  • Critical 9.1

    Insufficient Authentication Brute Force Protection on Login Endpoint

    IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts.

  • High 8.5

    Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

    IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary code due to improper…

  • High 8.5
    CVE-2026-17633 Public exploit

    Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

    IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary code due to code injection.

  • High 8.8

    Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

    IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary code due to improper validation of Python code during AST-based security scanning.

  • High 8.1

    Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

    IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute unintended code during Agentic Assistant validation due to improper handling of LLM‑generated components. The application executes model‑generated Python code in the backen…

  • High 8.8

    Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

    IBM Langflow OSS 1.0.0 through 1.10.3 installations allow anyone on the internet to execute arbitrary code on the server without any credentials via 2 HTTP requests.

  • High 8.8

    Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

    IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute arbitrary code due to a cryptographic weakness in the custom component validation mechanism. When the optional hardening mode that restricts execution to trusted component …

  • High 8.8

    Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

    IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote attacker to inject arbitrary code on the system, due to the improper control of user input code.

  • High 7.7

    Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement

    IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 could allow a remote attacker to traverse directories on the system. An attacker could send a specially cra…

  • Medium 6.5

    Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement

    IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate the username field, allowing attackers to inject path traversal sequences and bypass containment checks. This enables multiple severe impacts, including arbitrary directory deletion, cross-tenan…

  • High 7.1

    Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement

    IBM Langflow OSS 1.0.0 through 1.10.3 contain an authorization bypass vulnerability in the MemoryComponent that allows authenticated users to access chat history of other users via session_id collision. The MemoryComponent.retrieve_messages and store_message …