DEBIAN-CVE-2026-100888

Source
https://security-tracker.debian.org/tracker/CVE-2026-100888
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100888.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-100888
Upstream
  • CVE-2026-100888
Published
2026-09-28T00:16:32Z
Modified
2026-10-01T09:00:21Z
Severity
  • 5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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 CVSS Calculator
Summary
[none]
Details

A weakness has been identified in Trusted Domain Project OpenDKIM up to 2.11.0. This affects the function dkim_canon_selecthdrs of the file libopendkim/dkim-canon.c of the component DKIM Signature Header Selection. Executing a manipulation of the argument h can lead to out-of-bounds write. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

References

Affected packages

Debian:12 / opendkim

Package

Name
opendkim
Purl
pkg:deb/debian/opendkim?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.11.0~beta2-8
2.11.0~beta2-8+deb12u1
2.11.0~beta2-9
2.11.0~beta2-9.1
2.11.0~beta2-9.2

Ecosystem specific

{
    "urgency":  "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100888.json"

Debian:13 / opendkim

Package

Name
opendkim
Purl
pkg:deb/debian/opendkim?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.11.0~beta2-9.1
2.11.0~beta2-9.2

Ecosystem specific

{
    "urgency":  "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100888.json"

Debian:14 / opendkim

Package

Name
opendkim
Purl
pkg:deb/debian/opendkim?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.11.0~beta2-9.1
2.11.0~beta2-9.2

Ecosystem specific

{
    "urgency":  "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100888.json"