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Wysoka

n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration

  • Ujawniono: 22.07.2026
  • Aktualizacja: 11.10.2026 10:22

Impact

An authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API. This can be leveraged to bypass authentication, allowing unauthenticated requests to be treated as a privileged user and exposing endpoints such as the user and project listings. As a result, every account's personal data (email, role, MFA status) and all projects on the instance may be disclosed to unauthenticated callers. The pollution can also corrupt global state, making parts of the instance unresponsive until restarted.

Patches

The issue has been fixed in n8n versions 1.123.61, 2.27.4, and 2.28.1. Users should upgrade to one of these versions or later to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations:

  • Restrict workflow creation and editing permissions to fully trusted users only.
  • Restrict network access to the n8n instance to trusted users only.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Czego dotyczy

Kliknij technologię, aby zobaczyć wszystkie dotyczące jej podatności.

PlatformaPaczkaPodatne wersjePoprawka w wersji
Paczka npm n8n < 1.123.61, >= 2.28.0, < 2.28.1, >= 2.0.0-rc.0, < 2.27.4 1.123.61, 2.28.1, 2.27.4

Odnośniki

Ocena CVSS -
Wektor CVSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N
Słabość (CWE)
CWE-1321
Platforma
npm
Paczka
n8n
Ujawniono
22.07.2026
Aktualizacja
11.10.2026 10:22

Źródła i licencje

OSV / GitHub Advisory Database - GHSA-75qm-gp28-rcq9 - CC BY 4.0

Historia podatności: n8n

Wszystkie opisane podatności tej paczki (Paczka npm), od najnowszej. Widać, czy to jednorazowa wpadka, czy paczka, której trzeba pilnować.

Wszystkie (156) w archiwum
Wszystkich wpisów
156
Pierwsza → ostatnia
05.2023 09.2026
Bez poprawki
1
Wykorzystywana w atakach
1

Rozkład istotności

  • Krytyczna 24
  • Wysoka 58
  • Średnia 74

Ujawnienia w latach

Istotność:
  1. n8n: Expression Sandbox Escape via Shared Builtin Tampering and Code-Printer Injection Leads to Code Execution
    Wysoka CVE-2026-86083 < 1.123.76, >= 2.38.0, < 2.38.2, >= 2.0.0, < 2.37.7 1.123.76, 2.38.2, 2.37.7
  2. n8n: Domain-Restriction Bypass via Unguarded Model-Search Endpoint in OpenAI Chat Model Node
    Wysoka CVE-2026-86082 < 1.123.76, >= 2.38.0, < 2.38.2, >= 2.0.0, < 2.37.7 1.123.76, 2.38.2, 2.37.7
  3. n8n: Regular Expression Denial of Service in the Default Blocked-File-Pattern Match via a Git Node Clone Path
    Wysoka CVE-2026-86081 < 1.123.76, >= 2.38.0, < 2.38.2, >= 2.0.0, < 2.37.7 1.123.76, 2.38.2, 2.37.7
  4. n8n: Unauthenticated Persistent Storage Exhaustion via OAuth Dynamic Client Registration Endpoint
    Wysoka CVE-2026-86075 >= 2.38.0, < 2.38.2, < 2.37.7 2.38.2, 2.37.7
  5. n8n: Expression Sandbox Escape via Class-Field Sanitizer Rebinding Can Lead to Code Execution
    Wysoka CVE-2026-86076 < 1.123.76, >= 2.38.0, < 2.38.2, >= 2.0.0, < 2.37.7 1.123.76, 2.38.2, 2.37.7
  6. n8n: Prototype Pollution via Dot-Notation Field Names Leads To Instance-Wide Denial of Service
    Wysoka CVE-2026-72749 < 1.123.67, >= 2.32.0, < 2.32.1, >= 2.0.0-rc.0, < 2.31.5 1.123.67, 2.32.1, 2.31.5
  7. n8n: Edit Image Node Format Injection Allows Arbitrary File Write
    Wysoka CVE-2026-72762 < 1.123.67, >= 2.32.0, < 2.32.1, >= 2.0.0-rc.0, < 2.31.5 1.123.67, 2.32.1, 2.31.5
  8. n8n: Shared-Workflow Editor Can Exfiltrate Credentials via Inline Sub-Workflow JSON
    Wysoka CVE-2026-72763 < 1.123.67, >= 2.32.0, < 2.32.1, >= 2.0.0-rc.0, < 2.31.5 1.123.67, 2.32.1, 2.31.5
  9. n8n: Credential Authorization Bypass via Expression in HTTP Request Node `genericAuthType`
    Wysoka CVE-2026-72774 < 1.123.67, >= 2.32.0, < 2.32.1, >= 2.0.0-rc.0, < 2.31.5 1.123.67, 2.32.1, 2.31.5
  10. n8n: Expression sandbox escape via arrow-function bodies enabling command execution
    Wysoka CVE-2026-72765 >= 2.32.0, < 2.32.1, < 2.31.5 2.32.1, 2.31.5
  11. n8n: Send Email Node Arbitrary File Read and SSRF via Nodemailer Content-Object Type Confusion
    Wysoka CVE-2026-72766 < 1.123.67, >= 2.32.0, < 2.32.1, >= 2.0.0-rc.0, < 2.31.5 1.123.67, 2.32.1, 2.31.5
  12. n8n: Authenticated code execution in the n8n Git node
    Wysoka CVE-2026-72767 < 1.123.67, >= 2.32.0, < 2.32.1, >= 2.0.0-rc.0, < 2.31.5 1.123.67, 2.32.1, 2.31.5
  13. n8n: Git Node fetch/pull/pushTags Operations Bypass Sandbox Path Restriction
    Wysoka CVE-2026-72770 < 1.123.67, >= 2.32.0, < 2.32.1, >= 2.0.0-rc.0, < 2.31.5 1.123.67, 2.32.1, 2.31.5
  14. n8n: Bypass "Allowed HTTP Request Domains" Credential Restriction in Multiple AI and LLM Nodes
    Wysoka CVE-2026-72771 >= 2.32.0, < 2.32.1, < 2.31.5 2.32.1, 2.31.5
  15. n8n: Account Takeover via Unverified Email Claim in Token Exchange Embed Login
    Wysoka CVE-2026-72772 >= 2.32.0, < 2.32.1, < 2.31.5 2.32.1, 2.31.5
  16. n8n: SSO Instance-Role Provisioning Allows Privilege Escalation to Instance Owner
    Wysoka CVE-2026-65016 < 1.123.64, >= 2.30.0, < 2.30.1, >= 2.0.0-rc.0, < 2.29.8 1.123.64, 2.30.1, 2.29.8
  17. n8n: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution
    Wysoka CVE-2026-65591 < 1.123.64, >= 2.30.0, < 2.30.1, >= 2.0.0-rc.0, < 2.29.8 1.123.64, 2.30.1, 2.29.8
  18. n8n: Privilege Escalation and Code Execution via Full Public API Key Scope Assignment to Token Exchange JWTs
    Wysoka CVE-2026-65595 >= 2.30.0, < 2.30.1, < 2.29.8 2.30.1, 2.29.8
  19. n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution
    Wysoka CVE-2026-59208 >= 2.28.0, < 2.28.1, < 2.27.4 2.28.1, 2.27.4
  20. n8n: "Allowed HTTP Request Domains" Restriction Bypass via AI Agents MCP Connector
    Wysoka CVE-2026-59207 >= 2.28.0, < 2.28.1, < 2.27.4 2.28.1, 2.27.4
  21. n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration ten wpis
    Wysoka CVE-2026-59206 < 1.123.61, >= 2.28.0, < 2.28.1, >= 2.0.0-rc.0, < 2.27.4 1.123.61, 2.28.1, 2.27.4
  22. n8n: Shared Credential Header Leak via HTTP Request Pagination Expression
    Wysoka CVE-2026-59209 < 1.123.61, >= 2.28.0, < 2.28.1, >= 2.0.0-rc.0, < 2.27.4 1.123.61, 2.28.1, 2.27.4
  23. n8n: Stored DOM XSS via Resource Locator `cachedResultUrl`
    Wysoka CVE-2026-65592 < 1.123.64, >= 2.30.0, < 2.30.1, >= 2.0.0-rc.0, < 2.29.8 1.123.64, 2.30.1, 2.29.8
  24. n8n: DOM-Based XSS via Unsandboxed iframe srcdoc in HTML Preview
    Wysoka CVE-2026-65597 < 1.123.64, >= 2.30.0, < 2.30.1, >= 2.0.0-rc.0, < 2.29.8 1.123.64, 2.30.1, 2.29.8
  25. n8n: Race Condition in Git Clone Node Allows Authenticated Users to Achieve Remote Code Execution
    Wysoka CVE-2026-65598 < 1.123.64, >= 2.30.0, < 2.30.1, >= 2.0.0-rc.0, < 2.29.8 1.123.64, 2.30.1, 2.29.8
  26. n8n: AI Agents Project Viewer Privilege Escalation via run_node_tool
    Wysoka CVE-2026-65015 >= 2.30.0, < 2.30.1, < 2.29.8 2.30.1, 2.29.8
  27. n8n: SecurityScorecard Node Leaks API Token to User-Controlled Host
    Wysoka · 7.7 CVE-2026-54304 < 1.123.55, >= 2.26.0, < 2.26.1, >= 2.0.0-rc.0, < 2.25.7 1.123.55, 2.26.1, 2.25.7
  28. n8n: MCP Browser HTTP Transport Exposes Unauthenticated Browser-Control Sessions
    Wysoka · 10.0 CVE-2026-54309 >= 2.26.0, < 2.26.2, < 2.25.7 2.26.2, 2.25.7
  29. n8n: Cross-Tenant Credential Takeover via Dynamic Credentials EE Endpoints
    Wysoka · 9.9 CVE-2026-54305 < 1.123.55, >= 2.26.0, < 2.26.2, >= 2.0.0-rc.0, < 2.25.7 1.123.55, 2.26.2, 2.25.7
  30. n8n: Credential Exfiltration via Permission Bypass
    Wysoka · 9.6 CVE-2026-54307 < 1.123.55, >= 2.26.0, < 2.26.2, >= 2.0.0-rc.0, < 2.25.7 1.123.55, 2.26.2, 2.25.7
  31. n8n: Stored XSS in Chat Trigger Node
    Wysoka · 7.6 CVE-2026-54302 < 1.123.55, >= 2.26.0, < 2.26.2, >= 2.0.0-rc.0, < 2.25.7 1.123.55, 2.26.2, 2.25.7
  32. n8n: Microsoft SQL Node Prototype Pollution
    Wysoka · 8.5 CVE-2026-54312 < 2.24.0 2.24.0
  33. n8n: Same-Origin XSS in Respond to Webhook Node
    Wysoka · 7.6 CVE-2026-54301 < 1.123.55, >= 2.26.0, < 2.26.2, >= 2.0.0-rc.0, < 2.25.7 1.123.55, 2.26.2, 2.25.7
  34. n8n: Python sandbox escape
    Wysoka · 8.5 CVE-2026-49444 < 1.123.48, >= 2.22.0, < 2.22.4, >= 2.0.0-rc.0, < 2.21.8 1.123.48, 2.22.4, 2.21.8
  35. n8n Has a Cross-user Authorization Bypass in Dynamic Credential OAuth Endpoints
    Wysoka · 8.1 CVE-2026-45732 < 1.123.43, >= 2.21.0, < 2.21.1, >= 2.0.0-rc.0, < 2.20.7 1.123.43, 2.21.1, 2.20.7
  36. n8n Has a Source Control Pull SQL Injection
    Wysoka · 9.0 CVE-2026-44792 < 1.123.43, >= 2.21.0, < 2.21.1, >= 2.0.0-rc.0, < 2.20.7 1.123.43, 2.21.1, 2.20.7
  37. n8n Has an XML Node Prototype Pollution Patch Bypass
    Krytyczna · 9.9 CVE-2026-44791 < 1.123.43, >= 2.21.0, < 2.22.1, >= 2.0.0-rc.0, < 2.20.7 1.123.43, 2.22.1, 2.20.7
  38. n8n Has an Arbitrary File Read via Git Node
    Krytyczna · 8.8 CVE-2026-44790 < 1.123.43, >= 2.21.0, < 2.22.1, >= 2.0.0-rc.0, < 2.20.7 1.123.43, 2.22.1, 2.20.7
  39. n8n: HTTP Request Node Pagination Prototype Pollution to RCE
    Krytyczna · 9.9 CVE-2026-44789 < 1.123.43, >= 2.21.0, < 2.22.1, >= 2.0.0-rc.0, < 2.20.7 1.123.43, 2.22.1, 2.20.7
  40. n8n has XML Node Prototype Pollution that to RCE
    Krytyczna · 9.9 CVE-2026-42232 >= 2.18.0, < 2.18.1, >= 2.17.0, < 2.17.4, < 1.123.32 2.18.1, 2.17.4, 1.123.32
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