n8n contains an authentication bypass in the Chat Trigger node when configured with n8n User Auth (a non-default configuration). In affected releases — before 1.123.22, the 2.0.0 through 2.9.2 line, and 2.10.0 — the authentication check on the Chat Trigger webhook endpoint can be circumvented, allowing access without valid credentials. Fixed in 1.123.22, 2.9.3, and 2.10.1.
{
"cwe_ids": [
"CWE-287"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56353.json"
}{
"cpe": [
"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*",
"cpe:2.3:a:n8n:n8n:2.10.0:*:*:*:community:node.js:*:*",
"cpe:2.3:a:n8n:n8n:2.10.0:*:*:*:enterprise:node.js:*:*"
],
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.123.22"
},
{
"introduced": "2.0.0"
},
{
"fixed": "2.9.3"
},
{
"introduced": "2.10.0"
},
{
"last_affected": "2.10.0"
}
],
"source": [
"CPE_RANGE",
"CPE_STRING"
]
}