MediumFix available
node-nodemailer — security advisory
Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that fails to strip RFC 5322 comments inside angle-bracket addresses. Attackers can supply recipients like a display name with a parenthesized comment in the domain, so illegal characters reach envelope.to and RCPT TO, causing rejected delivery or parser interpretation conflicts that bypass domain allow-lists.
- Products
- node-nodemailer
- Affected versions
- 10.0.0+~8.0.1-1, 10.0.10+~8.0.1-1, 10.0.10+~8.0.2-1, 10.0.13+~8.0.2-1, 10.0.14+~8.0.2-1, 10.1.7+~8.0.2-1, 6.10.0+~6.4.17-1, 6.10.0+~6.4.17-1+deb13u1, 6.8.0+~6.4.6-1, 6.9.13+~6.4.14-1, 6.9.15+~6.4.16-1, 6.9.16+~6.4.16-1, 6.9.4+~6.4.9-1, 6.9.4+~6.4.9-2, 6.9.4+~6.4.9-3, 6.9.4+~6.4.9-4, 7.0.10+~7.0.2-1, 7.0.12+~7.0.5-1, 7.0.5+~7.0.1-1, 7.0.6+~7.0.1-1, 7.0.9+~7.0.2-1, 7.0.9+~7.0.2-2, 8.0.11+~8.0.1-1, 8.0.2+~7.0.11-1, 8.0.3+~7.0.11-1, 8.0.4+~7.0.11-1, 8.0.4+~7.0.11-2, 9.0.0+~8.0.1-1, 9.0.3+~8.0.1-1, 9.0.5+~8.0.1-1, 9.0.6+~8.0.1-1
- Fixed versions
- 10.0.13+~8.0.2-1
- CVEs
- CVE-2026-110870
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:54 UTC · Revision 1
Source evidence
Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that fails to strip RFC 5322 comments inside angle-bracket addresses. Attackers can supply recipients like a display name with a parenthesized comment in the domain, so illegal characters reach envelope.to and RCPT TO, causing rejected delivery or parser interpretation conflicts that bypass domain allow-lists.
osv:DEBIAN-CVE-2026-110870
node-nodemailer
Fixed versions: Not specified
node-nodemailer
Fixed versions: Not specified
node-nodemailer
Fixed versions: 10.0.13+~8.0.2-1
Complete source record
{
"id": "c2b06bd556a49595394a815b4264d1b16feff709694640e70aafed6ff9e3484a",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-110870",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-110870",
"summary": "Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that fails to strip RFC 5322 comments inside angle-bracket addresses. Attackers can supply recipients like a display name with a parenthesized comment in the domain, so illegal characters reach envelope.to and RCPT TO, causing rejected delivery or parser interpretation conflicts that bypass domain allow-lists.",
"evidence": "osv:DEBIAN-CVE-2026-110870",
"products": [
{
"name": {
"value": "node-nodemailer",
"evidence": "/affected/0/package/name"
},
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{
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"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
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{
"value": "10.0.10+~8.0.2-1",
"evidence": "/affected/0/versions"
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{
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{
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{
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{
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{
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{
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{
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{
"value": "9.0.3+~8.0.1-1",
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{
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{
"name": {
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"affected_versions": [
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{
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{
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"evidence": "/affected/1/versions"
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{
"value": "10.0.13+~8.0.2-1",
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{
"value": "10.0.14+~8.0.2-1",
"evidence": "/affected/1/versions"
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{
"value": "10.1.7+~8.0.2-1",
"evidence": "/affected/1/versions"
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{
"value": "6.10.0+~6.4.17-1",
"evidence": "/affected/1/versions"
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{
"value": "6.10.0+~6.4.17-1+deb13u1",
"evidence": "/affected/1/versions"
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{
"value": "7.0.10+~7.0.2-1",
"evidence": "/affected/1/versions"
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{
"value": "7.0.12+~7.0.5-1",
"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
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{
"value": "7.0.9+~7.0.2-1",
"evidence": "/affected/1/versions"
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{
"value": "7.0.9+~7.0.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "8.0.11+~8.0.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "8.0.2+~7.0.11-1",
"evidence": "/affected/1/versions"
},
{
"value": "8.0.3+~7.0.11-1",
"evidence": "/affected/1/versions"
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{
"value": "8.0.4+~7.0.11-1",
"evidence": "/affected/1/versions"
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{
"value": "8.0.4+~7.0.11-2",
"evidence": "/affected/1/versions"
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{
"value": "9.0.0+~8.0.1-1",
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{
"value": "9.0.3+~8.0.1-1",
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{
"name": {
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{
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"evidence": "/affected/2/versions"
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{
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"evidence": "/affected/2/versions"
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{
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{
"value": "7.0.9+~7.0.2-2",
"evidence": "/affected/2/versions"
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{
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"evidence": "/affected/2/versions"
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{
"value": "8.0.2+~7.0.11-1",
"evidence": "/affected/2/versions"
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{
"value": "8.0.3+~7.0.11-1",
"evidence": "/affected/2/versions"
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{
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"evidence": "/affected/2/versions"
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{
"value": "8.0.4+~7.0.11-2",
"evidence": "/affected/2/versions"
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{
"value": "9.0.0+~8.0.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "9.0.3+~8.0.1-1",
"evidence": "/affected/2/versions"
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{
"value": "9.0.5+~8.0.1-1",
"evidence": "/affected/2/versions"
},
{
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"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-110870",
"aliases": [
"DEBIAN-CVE-2026-110870"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-nodemailer",
"purl": "pkg:deb/debian/node-nodemailer?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
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"10.0.10+~8.0.1-1",
"10.0.10+~8.0.2-1",
"10.0.13+~8.0.2-1",
"10.0.14+~8.0.2-1",
"10.1.7+~8.0.2-1",
"6.10.0+~6.4.17-1",
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"6.9.15+~6.4.16-1",
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"6.9.4+~6.4.9-1",
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],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110870.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
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}
],
"package": {
"name": "node-nodemailer",
"purl": "pkg:deb/debian/node-nodemailer?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
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"6.10.0+~6.4.17-1",
"6.10.0+~6.4.17-1+deb13u1",
"7.0.10+~7.0.2-1",
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"9.0.0+~8.0.1-1",
"9.0.3+~8.0.1-1",
"9.0.5+~8.0.1-1",
"9.0.6+~8.0.1-1"
],
"database_specific": {
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},
"ecosystem_specific": {
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}
},
{
"ranges": [
{
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"events": [
{
"introduced": "0"
},
{
"fixed": "10.0.13+~8.0.2-1"
}
]
}
],
"package": {
"name": "node-nodemailer",
"purl": "pkg:deb/debian/node-nodemailer?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"10.0.0+~8.0.1-1",
"10.0.10+~8.0.1-1",
"10.0.10+~8.0.2-1",
"6.10.0+~6.4.17-1",
"7.0.10+~7.0.2-1",
"7.0.12+~7.0.5-1",
"7.0.5+~7.0.1-1",
"7.0.6+~7.0.1-1",
"7.0.9+~7.0.2-1",
"7.0.9+~7.0.2-2",
"8.0.11+~8.0.1-1",
"8.0.2+~7.0.11-1",
"8.0.3+~7.0.11-1",
"8.0.4+~7.0.11-1",
"8.0.4+~7.0.11-2",
"9.0.0+~8.0.1-1",
"9.0.3+~8.0.1-1",
"9.0.5+~8.0.1-1",
"9.0.6+~8.0.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110870.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-27T10:00:40.559378984Z",
"provider": "osv",
"upstream": [
"CVE-2026-110870"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-110870"
]
},
"related_cves": [
{
"value": "CVE-2026-110870",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 461456,
"published_at": "2026-10-14T23:17:28.813+00:00"
}