CVE-2026-72769
highPriorität · verfolgen · 32EPSS 0.005 · 44. PerzentilDEEUUSEPSS · bewertet 2026-10-27
n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process (a sandbox escape), leading to a denial of service. Both self-hosted and cloud instances running the VM expression engine are affected.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · low–high · 2.4–8.1
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
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betroffene Produkte (15)
Betroffene Produkte und Versionsbereiche.
Advisories (2)
Hersteller- und Ökosystem-Meldungen dazu.
- WID-SEC-W-2026-2489n8n: Mehrere SchwachstellenDeutsch2026-07-22csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in n8n ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen SQL-Injection Angriff durchzuführen, und um beliebigen Programmcode auszuführen.
- GHSA-hx4h-vr3m-45vhn8n: Prototype Pollution via VM Expression Engine Sandbox Escape Leads to Denial of Service2026-07-22ghsa · osvUS
## Impact An authenticated user able to create or edit a workflow expression could abuse the expression engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process, leading to a denial of service. Both self-hosted and cloud instances running the VM expression engine are affected. ## Patches The issue has been fixed in n8n versions 1.123.67, 2.31.5, and 2.32.1. 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 n8n instance access to fully trusted users only. - Disable the VM expression engine if an alternative is available for your deployment. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
auch bekannt als (3)
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quellen
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Referenzen (6)
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vhcnnvd
- https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-enginecnnvd
- https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vhenisa_euvd
- https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-engineenisa_euvd
- https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vhMitigationVendor Advisorynvd
- https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-engineThird Party Advisorynvd
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