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CVE-2026-81211

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 could allow a remote authenticated attacker to execute arbitrary Python code due to improper authorization of custom components in stored flows.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-81204

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 could allow a remote attacker to execute arbitrary code due to code injection during graph construction.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
CVE-2026-79742

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 could allow a remote authenticated attacker to execute arbitrary code due to an incomplete environment variable blocklist.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-79725

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 could allow a remote authenticated attacker to read arbitrary files due to improper access control.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
CVE-2026-79724

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 could allow a remote attacker to execute arbitrary OS commands due to improper neutralization of special elements used in an OS command.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
CVE-2026-79723

Langflow is vulnerable to server-side request forgery due to missing egress validation on server-side URL fetches

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to obtain sensitive information due to improper validation of user-controlled API endpoints.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
Vendors
CVE-2026-78575

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 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-78571

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 could allow a remote authenticated attacker to execute arbitrary code due to an unguarded eval() call on attacker-controlled input.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-78569

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 could allow an authenticated attacker to execute arbitrary code due to an incomplete denylist in the security scanner.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
CVE-2026-76059

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 An attacker who could submit custom component source code could bypass the static security scanner by crafting an annotated class-body assignment that resolved to a dangerous callable through alias tracking; the resolved value was never checked against the dangerous callable blocklist due to the logic error. If the crafted component reached the runtime execution path, the attacker could cause arbitrary operating system commands to execute on the server in-process, with the privileges of the running service.

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