Nodemailer from 3.0.0 before 10.0.10 contains a quadratic complexity denial of service vulnerability in the SMTP client reply parser in SMTPConnection._onData and isPartialResponse. A malicious SMTP server or on-path attacker can stream continuation lines without a completion line before authentication, blocking the Node.js event loop and exhausting memory.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-400"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110872.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "10.0.10"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "10.0.10"
}
],
"source": "DESCRIPTION"
}
]
}