opendkim — security advisory
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
- Products
- opendkim
- Affected versions
- 2.11.0~beta2-8
- Fixed versions
- 2.11.0~beta2-8+deb12u1, 2.11.0~beta2-9
- CVEs
- CVE-2022-48521
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:04 UTC · Revision 1
Source evidence
An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.
osv:DEBIAN-CVE-2022-48521
opendkim
Fixed versions: 2.11.0~beta2-8+deb12u1
opendkim
Fixed versions: 2.11.0~beta2-9
opendkim
Fixed versions: 2.11.0~beta2-9
Complete source record
{
"id": "20b50b66cd57be47a35dfbf5b78f71cd99d0348de347eb74ce08a334a322ccf8",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-48521",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-48521",
"summary": "An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.",
"evidence": "osv:DEBIAN-CVE-2022-48521",
"products": [
{
"name": {
"value": "opendkim",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.11.0~beta2-8+deb12u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "2.11.0~beta2-8",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "opendkim",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.11.0~beta2-9",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "opendkim",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.11.0~beta2-9",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2022-48521",
"aliases": [
"DEBIAN-CVE-2022-48521"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.11.0~beta2-8+deb12u1"
}
]
}
],
"package": {
"name": "opendkim",
"purl": "pkg:deb/debian/opendkim?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.11.0~beta2-8"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48521.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.11.0~beta2-9"
}
]
}
],
"package": {
"name": "opendkim",
"purl": "pkg:deb/debian/opendkim?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48521.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.11.0~beta2-9"
}
]
}
],
"package": {
"name": "opendkim",
"purl": "pkg:deb/debian/opendkim?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48521.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-15T08:02:47.559396480Z",
"provider": "osv",
"upstream": [
"CVE-2022-48521"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-48521"
]
},
"related_cves": [
{
"value": "CVE-2022-48521",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 324261,
"published_at": "2023-07-11T20:15:10.523+00:00"
}