Sign in
Deutsch English Español Polski
Critical

Langflow through 0.6.19 allows remote code execution if untrusted users are able to reach the "POST /api/v1/custom_component" endpoint and provide a Python script.

  • Disclosed: 10.06.2024
  • Updated: 11.10.2026 12:20

Langflow through 0.6.19 allows remote code execution if untrusted users are able to reach the "POST /api/v1/custom_component" endpoint and provide a Python script.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Python (PyPI) langflow < 1.0.0a3 1.0.0a3

References

CVSS score 9.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-913, CWE-94
Platform
Python (PyPI)
Package
langflow
Disclosed
10.06.2024
Updated
11.10.2026 12:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-qg33-x2c5-6p44 - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2024-177 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: langflow

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (42) in the archive
Total entries
42
First → latest
06.2024 10.2026
Without a fix
7
Exploited in attacks
5

Severity breakdown

  • Critical 15
  • High 17
  • Medium 7
  • Low 3

Disclosures per year

Severity:
  1. Langflow: OS command injection (RCE) via arbitrary command in MCP stdio server configuration
    Critical · 9.9 CVE-2026-105697 >= 1.1.2, < 1.10.3 1.10.3
  2. Langflow has Authenticated Cross-Project File Disclosure via Unscoped MCP Resource Handlers
    High CVE-2026-105699 >= 1.6.8, < 1.9.1 1.9.1
  3. Langflow: IP Spoofing Bypass via `X-Forwarded-For` Allowing Remote Configuration Write
    High · 7.1 CVE-2026-105741 >= 1.5.0, < 1.10.3 1.10.3
  4. Langflow: PythonREPLComponent executes unsandboxed Python code, enabling authenticated RCE and privilege escalation
    Critical · 9.9 CVE-2026-10561 < 1.10.1 1.10.1
  5. Langflow: Weak Fernet Key via random.seed()
    Critical · 9.1 CVE-2026-9205 < 1.10.1 1.10.1
  6. Langflow: Unauthenticated Flow Execution via Webhook Authentication Bypass
    Critical · 9.8 CVE-2026-8505 >= 1.7.0, < 1.9.1 1.9.1
  7. Langflow: Title Authenticated Remote Code Execution in validate_code via Malicious Decorators Description
    High · 8.8 CVE-2026-51886 >= 1.7.2, < 1.10.1 1.10.1
  8. Langflow: Prompt injection in Langflow Smart Transform can lead to code execution
    High · 8.8 CVE-2026-7700 >= 1.3.0, < 1.10.3 1.10.3
  9. Langflow: BaseFileComponent-based nodes arbitrary file read with RCE exploit
    Critical · 9.6 CVE-2026-55447 < 1.9.2 1.9.2
  10. Langflow: Unauthenticated DoS through multipart form boundary file upload
    High · 7.5 CVE-2026-55446 < 1.0.19 1.0.19
  11. Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow
    High · 8.4 Exploited in attacks CVE-2026-55255 < 1.9.1 1.9.1
  12. Langflow: Unauthenticated file upload leads to DoS (space exhaustion) and information leak
    Critical · 9.3 CVE-2026-55450 < 1.9.1 1.9.1
  13. Langflow: Unauthenticated RCE in Shareable Playgrounds
    Critical · 9.6 CVE-2026-48519 < 1.9.2 1.9.2
  14. Langflow: IDOR/BOLA in Monitor API — Missing Ownership Enforcement on 7 Endpoints
    High · 8.8 CVE-2026-33760 < 1.9.0 1.9.0
  15. Langflow Knowledge Bases API is Vulnerable to Path Traversal
    Critical · 9.6 CVE-2026-42048 < 1.9.0 1.9.0
  16. Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check
    High CVE-2026-34046 < 1.5.1 1.5.1
  17. Langflow has Authenticated Code Execution in Agentic Assistant Validation
    Critical CVE-2026-33873 < 1.9.0 1.9.0
  18. langflow: /profile_pictures/{folder_name}/{file_name} endpoint file reading
    High CVE-2026-33497 < 1.7.1 1.7.1
  19. langflow has Unauthenticated IDOR on Image Downloads
    High · 7.5 CVE-2026-33484 >= 1.0.0, < 1.9.0 1.9.0
  20. Langflow has an Arbitrary File Write (RCE) via v2 API
    Critical · 9.9 CVE-2026-33309 >= 1.2.0, < 1.9.0 1.9.0
  21. Langflow is Missing Ownership Verification in API Key Deletion (IDOR)
    High CVE-2026-33053 < 1.9.0 1.9.0
  22. Unauthenticated Remote Code Execution in Langflow via Public Flow Build Endpoint
    Critical · 9.8 Exploited in attacks CVE-2026-33017 < 1.9.0 1.9.0
  23. Langflow has Remote Code Execution in CSV Agent
    Critical · 9.8 CVE-2026-27966 <= 1.8.0rc2 no fix
  24. Langflow affected by Remote Code Execution via validate_code() exec()
    High Exploited in attacks CVE-2026-0770 <= 1.7.3 no fix
  25. Langflow Missing Authentication on Critical API Endpoints
    High CVE-2026-21445 < 1.7.1 1.7.1
  26. Langflow vulnerable to Server-Side Request Forgery
    High · 7.7 CVE-2025-68477 < 1.7.1 1.7.1
  27. External Control of File Name or Path in Langflow
    High · 7.1 CVE-2025-68478 < 1.7.1 1.7.1
  28. Langflow versions up to and including 1.6.9 contain a chained vulnerability that enables account takeover and remote code execution. An overly permissive CORS configuration (allow_origins='*' with all
    High · 8.8 Exploited in attacks CVE-2025-34291 < 1.7.0 1.7.0
  29. Langflow Vulnerable to Privilege Escalation via CLI Superuser Creation (Post-RCE)
    High · 8.8 CVE-2025-57760 < 1.5.0 1.5.0
  30. Langflow Unauth RCE
    Critical Exploited in attacks CVE-2025-3248 < 1.3.0 1.3.0
  31. langflow v1.0.12 was discovered to contain a remote code execution (RCE) vulnerability via the PythonCodeTool component.
    Critical · 9.8 CVE-2024-42835 <= 1.0.12 no fix
  32. Langflow through 0.6.19 allows remote code execution if untrusted users are able to reach the "POST /api/v1/custom_component" endpoint and provide a Python script. this entry
    Critical · 9.8 CVE-2024-37014 < 1.0.0a3 1.0.0a3

Know which vulnerabilities affect your application

With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.

Connect your application
DockRay newsletter

Application security in your inbox

Important vulnerabilities, actionable guidance and practical advice for your applications. Choose your technologies and follow what matters to your project.

  • A daily digest of new vulnerabilities, critical ones included.
  • Notifications about important updates.
  • Practical advice on application security and monitoring.

Leave empty to receive updates for every technology.

Privacy policy

Free to subscribe. Unsubscribe with one click in any email.