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DEBIAN-CVE-2026-100889

Type: advisorySource: OSV1 source record

A vulnerability was detected in Trusted Domain Project OpenDKIM up to 2.11.0. Affected is the function dkim_qp_decode of the file util.c of the component Decoder. The manipulation results in off-by-one. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-100889

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-2026-100889

opendkim

Source reference: /affected/0/package/name

Affected versions
2.11.0~beta2-8

Source reference: /affected/0/versions

2.11.0~beta2-8+deb12u1

Source reference: /affected/0/versions

2.11.0~beta2-9

Source reference: /affected/0/versions

2.11.0~beta2-9.1

Source reference: /affected/0/versions

2.11.0~beta2-9.2

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

opendkim

Source reference: /affected/1/package/name

Affected versions
2.11.0~beta2-9.1

Source reference: /affected/1/versions

2.11.0~beta2-9.2

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

opendkim

Source reference: /affected/2/package/name

Affected versions
2.11.0~beta2-9.1

Source reference: /affected/2/versions

2.11.0~beta2-9.2

Source 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": "opendkim",
      "purl": "pkg:deb/debian/opendkim?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "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"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100889.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "opendkim",
      "purl": "pkg:deb/debian/opendkim?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.11.0~beta2-9.1",
      "2.11.0~beta2-9.2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100889.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "opendkim",
      "purl": "pkg:deb/debian/opendkim?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.11.0~beta2-9.1",
      "2.11.0~beta2-9.2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100889.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#25826 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-100889 · Revision 1Source updated