CVE-2026-65591
highPriorität · beachten · 45EPSS 0.007 · 53. PerzentilExploit · PoCEUUSEPSS · bewertet 2026-10-27
n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
Exploits (1)
Öffentlicher Proof-of-Concept- und Exploit-Code.
- IamDremig/CVE-2026-65591IamDremig/CVE-2026-65591PoC · poc_in_github
betroffene Produkte (9)
Betroffene Produkte und Versionsbereiche.
Advisories (1)
Hersteller- und Ökosystem-Meldungen dazu.
- GHSA-pm35-fqvh-cq5gn8n: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution2026-07-22ghsa · osvUS
## Impact The legacy expression evaluator's computed-member sanitizer can be bypassed by an authenticated user with workflow create or modify permissions. Successful exploitation grants the attacker host-level code execution as the n8n process. The legacy expression engine is the default engine in affected versions. ## Patches The issue has been fixed in n8n versions 1.123.64, 2.29.8, and 2.30.1. 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. - Switch to the non-legacy expression engine by setting `N8N_EXPRESSION_ENGINE=vm`. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
auch bekannt als (4)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (6)
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5gcnnvd
- https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-executioncnnvd
- https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5genisa_euvd
- https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-executionenisa_euvd
- https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5gMitigationVendor Advisorynvd
- https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-executionThird Party Advisorynvd
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