CVE-2026-65591
HIGHn8n before 1.123.64 Sanitizer Bypass Remote Code Execution
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-pm35-fqvh-cq5g)
https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g
Third Party Advisory third-party-advisory
VulnCheck Advisory: n8n before 1.123.64 Sanitizer Bypass Remote Code Execution
https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution
Scores
CVSS v3
8.8
EPSS
0.0047
EPSS Percentile
38.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-917
Status
published
Products (11)
n8n/n8n
2.30.0 (2 CPE variants)
n8n/n8n
< 1.123.64 (2 CPE variants)
n8n-io/n8n
< 1.123.64
n8n-io/n8n
< 2.29.8
n8n-io/n8n
< 2.30.1
n8n-io/n8n
1.123.64
n8n-io/n8n
2.29.8
n8n-io/n8n
2.30.1
npm/n8n
0 - 1.123.64npm
npm/n8n
2.0.0-rc.0 - 2.29.8npm
... and 1 more
Published
Jul 22, 2026
Tracked Since
Jul 22, 2026