DEBIAN-CVE-2026-90467
aiosmtplib before 5.1.3 fails to properly validate email addresses supplied by callers, allowing attackers to inject ESMTP parameters into MAIL FROM and RCPT TO command lines. Attackers can craft malicious addresses containing spaces and angle brackets to append parameters like AUTH, NOTIFY, or ORCPT to envelope commands, forging authenticated identities or forcing delivery notifications to third parties.
DEBIAN-CVE-2026-90467
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-90467
aiosmtplib
Source reference: /affected/0/package/name
- Affected versions
- 2.0.0-1
Source reference:
/affected/0/versions3.0.1-1Source reference:
/affected/0/versions3.0.2-1Source reference:
/affected/0/versions3.0.2-2Source reference:
/affected/0/versions4.0.0-1Source reference:
/affected/0/versions4.0.1-1Source reference:
/affected/0/versions4.0.1-1~exp1Source reference:
/affected/0/versions4.0.2-1Source reference:
/affected/0/versions5.0.0-1Source reference:
/affected/0/versions5.1.0-1Source reference:
/affected/0/versions5.1.0-2Source reference:
/affected/0/versions5.1.0-3Source reference:
/affected/0/versions5.1.2-1Source reference:
/affected/0/versions5.1.3-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
aiosmtplib
Source reference: /affected/1/package/name
- Affected versions
- 4.0.0-1
Source reference:
/affected/1/versions4.0.1-1Source reference:
/affected/1/versions4.0.1-1~exp1Source reference:
/affected/1/versions4.0.2-1Source reference:
/affected/1/versions5.0.0-1Source reference:
/affected/1/versions5.1.0-1Source reference:
/affected/1/versions5.1.0-2Source reference:
/affected/1/versions5.1.0-3Source reference:
/affected/1/versions5.1.2-1Source reference:
/affected/1/versions5.1.3-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
aiosmtplib
Source reference: /affected/2/package/name
- Affected versions
- 4.0.0-1
Source reference:
/affected/2/versions4.0.1-1Source reference:
/affected/2/versions4.0.1-1~exp1Source reference:
/affected/2/versions4.0.2-1Source reference:
/affected/2/versions5.0.0-1Source reference:
/affected/2/versions5.1.0-1Source reference:
/affected/2/versions5.1.0-2Source reference:
/affected/2/versions5.1.0-3Source reference:
/affected/2/versions5.1.2-1Source reference:
/affected/2/versions - Fixed versions
- 5.1.3-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "aiosmtplib",
"purl": "pkg:deb/debian/aiosmtplib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.0.0-1",
"3.0.1-1",
"3.0.2-1",
"3.0.2-2",
"4.0.0-1",
"4.0.1-1",
"4.0.1-1~exp1",
"4.0.2-1",
"5.0.0-1",
"5.1.0-1",
"5.1.0-2",
"5.1.0-3",
"5.1.2-1",
"5.1.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90467.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "aiosmtplib",
"purl": "pkg:deb/debian/aiosmtplib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.0.0-1",
"4.0.1-1",
"4.0.1-1~exp1",
"4.0.2-1",
"5.0.0-1",
"5.1.0-1",
"5.1.0-2",
"5.1.0-3",
"5.1.2-1",
"5.1.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90467.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.1.3-1"
}
]
}
],
"package": {
"name": "aiosmtplib",
"purl": "pkg:deb/debian/aiosmtplib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.0.0-1",
"4.0.1-1",
"4.0.1-1~exp1",
"4.0.2-1",
"5.0.0-1",
"5.1.0-1",
"5.1.0-2",
"5.1.0-3",
"5.1.2-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90467.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #6100 · Revision 1
- Added to Heist Feed
- Publisher date