n8n before 2.41.4 and 2.42.0 before 2.42.1 does not validate credential ids stored in agent node parameters when an editor saves a shared workflow, because the check inspects only a node's credentials field. An editor can configure a Message an Agent node in inline mode with tools they control to resolve the owner's credentials and send decrypted secrets to an attacker-chosen destination.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-863"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110850.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "2.41.4"
},
{
"introduced": "2.42.0"
},
{
"fixed": "2.42.1"
}
],
"source": "AFFECTED_FIELD"
}