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CVE-2026-7873

Code Injection Vulnerability in Code Validation Endpoint

IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.

CVSS 3.1 · 9.9 Critical EPSS 6.9% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-7871

Insecure Deserialization in Redis Cache Backend

IBM Langflow OSS 1.0.0 through 1.10.0 allows users with Redis access to execute arbitrary code with full application privileges, compromising all secrets, data, and system integrity.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-10134

Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows

IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.

CVSS 3.1 · 10 Critical EPSS 2.3% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-10129

SSRF via HTTP Redirect Following in Langflow API Request Component

IBM Langflow OSS 1.0.0 through 1.9.3 contains a Server-Side Request Forgery (SSRF) protection bypass vulnerability in the API Request component. An authenticated attacker with low-level privileges (flow author role) can bypass SSRF protections by enabling the follow_redirects parameter and supplying a public URL that redirects to internal/localhost addresses. The vulnerability exists because the application validates only the initial URL but does not re-validate redirect destinations. This allows attackers to access internal HTTP services, localhost endpoints, cloud metadata services, and private network resources that should be unreachable when SSRF protection is enabled. Successful exploitation can lead to disclosure of sensitive information including credentials, tokens, internal API responses, and administrative panel data.

CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-10564

SSRF Vulnerability in Langflow OSS Legacy Components Bypasses Protection

IBM Langflow OSS 1.0.0 through 1.9.6 contains a Server-Side Request Forgery (SSRF). The legacy RSSReaderComponent in rss.py and SearXNG component in searxng.py make unvalidated HTTP requests to user-controlled URLs, bypassing SSRF protections introduced in version 1.9.3. An authenticated attacker can exploit this to access internal resources including cloud metadata services (AWS/Azure/GCP IMDS), potentially exfiltrating IAM credentials and enumerating internal networks. The vulnerability can also be triggered through prompt injection in agentic workflows due to tool_mode=True exposure.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-10560

Unauthenticated Access to Private Flow Build Events and Cancellation in Langflow OSS

IBM Langflow OSS 1.0.0 through 1.9.6 contains a missing authentication vulnerability in /api/v1/build_public_tmp/ endpoints that allows an unauthenticated attacker to read build event data or cancel jobs using a valid job identifier, resulting in information disclosure and denial of service.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-10140

Cross-Tenant API Key Reuse and Billing Fraud in Langflow Voice Mode Subsystem

IBM Langflow OSS 1.0.0 through 1.10.0 voice mode contains improper shared-state handling that allows reuse of API clients across tenant boundaries. An authenticated attacker can manipulate cache state to cause requests from other users to be processed using incorrect upstream API credentials, leading to cross-tenant billing and accountability misattribution.

CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-10546

DNS Rebinding TOCTOU Bypass of SSRF Protection in Langflow OSS URL Component

IBM Langflow OSS 1.0.0 through 1.9.3 contains a Server-Side Request Forgery (SSRF) vulnerability in the URL component ( src/lfx/src/lfx/components/data_source/url.py ) due to a Time-of-Check/Time-of-Use (TOCTOU) race condition that can be exploited via DNS rebinding.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-7663

Unauthenticated Cross-User MCP Resource Access and Tool Execution via Streamable Transport Authorization Bypass

IBM Langflow OSS 1.0.0 through 1.9.6 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-7803

Flow Validation Bypass via Empty Component Type Field

IBM Langflow OSS 1.0.0 through 1.10.0 could allow arbitrary code execution due to improper validation of flow nodes with missing or empty component type fields.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-7874

Weak Cryptographic Key Derivation Exposed All Stored Credentials

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow disclosure of all stored credentials due to the use of a weak and reversible key derivation mechanism for encryption at rest.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-10561

Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection

IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise

CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-7664

Unauthenticated Flow Execution via Webhook Endpoint in Langflow OSS

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-7524

Path Traversal Vulnerability in File Processing Components Allows Unauthorized File System Access and Potential Remote Code Execution

IBM Langflow OSS 1.0.0 through 1.9.1 could allow remote code execution due to improper validation of symbolic links during archive extraction.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-7528

Unauthenticated File Upload Vulnerability Allows Disk Space Exhaustion and Path Disclosure in Langflow OSS

IBM Langflow OSS 1.0.0 through 1.9.0 could allow a denial of service due to uncontrolled resource consumption.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow
CVE-2026-6542

Monitor API allows cross-user read of transaction logs and deletion of build data via flow_id

IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Ibm Langflow
Products
Langflow Oss Langflow