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.
{
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65591.json",
"cwe_ids": [
"CWE-917"
]
}{
"cpe": [
"cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*",
"cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*",
"cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:*",
"cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:enterprise:node.js:*:*"
],
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.123.64"
},
{
"introduced": "2.0.0"
},
{
"fixed": "2.29.8"
},
{
"introduced": "2.30.0"
},
{
"last_affected": "2.30.0"
}
],
"source": [
"CPE_RANGE",
"CPE_STRING"
]
}