DEBIAN-CVE-2026-100890
A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_spf_ipv6_explode in the library libopendmarc/opendmarc_spf.c of the component SPF Parser. This manipulation of the argument cp causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
DEBIAN-CVE-2026-100890
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-2026-100890
opendmarc
Source reference: /affected/0/package/name
- Affected versions
- 1.4.2-2
Source reference:
/affected/0/versions1.4.2-3Source reference:
/affected/0/versions1.4.2-4Source reference:
/affected/0/versions1.4.2-4.1Source reference:
/affected/0/versions1.4.2-4.1~exp1Source reference:
/affected/0/versions1.4.2-5Source reference:
/affected/0/versions1.4.2-5.1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
opendmarc
Source reference: /affected/1/package/name
- Affected versions
- 1.4.2-5
Source reference:
/affected/1/versions1.4.2-5.1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
opendmarc
Source reference: /affected/2/package/name
- Affected versions
- 1.4.2-5
Source reference:
/affected/2/versions1.4.2-5.1Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- 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": "opendmarc",
"purl": "pkg:deb/debian/opendmarc?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.4.2-2",
"1.4.2-3",
"1.4.2-4",
"1.4.2-4.1",
"1.4.2-4.1~exp1",
"1.4.2-5",
"1.4.2-5.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100890.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opendmarc",
"purl": "pkg:deb/debian/opendmarc?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.4.2-5",
"1.4.2-5.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100890.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opendmarc",
"purl": "pkg:deb/debian/opendmarc?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.4.2-5",
"1.4.2-5.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100890.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #25822 · Revision 1
- Added to Heist Feed
- Publisher date