Nodemailer 3.0.0 before 10.4.1 contains an address parsing flaw in addressparser that truncates domains at folding whitespace or comments before a dot, allowing attackers to bypass recipient domain restrictions. Attackers can submit crafted to, cc, bcc or replyTo addresses that pass RFC 5322 domain checks but deliver mail to an attacker-chosen address under the application's sender identity.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-436"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/125xxx/CVE-2026-125755.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "10.4.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
},
{
"extracted_events": [
{
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "10.4.1"
}
],
"source": "CPE_FIELD",
"strategy": "CPEApplicability"
}
]
},
{
"extracted_events": [
{
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "10.4.1"
}
],
"source": "DESCRIPTION"
}
]
}
]
}{
"extracted_events": [
{
"range": [
{
"fixed": "c2b9c41bb81b2294ebadd294ad15ff035a17d0a5"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v10.4.1",
"range": [
{
"fixed": "434b93cedc76108c43ac9b71afb21e4e7af81f13"
}
],
"source": "REFERENCES_TAG"
}
]
}