UnratedFix available

DEBIAN-CVE-2026-84969

Type: advisorySource: OSV1 source record

A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no privileges on the application that links the driver, may cause a small amount of data outside the intended buffer to be altered.

Announced 3 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-84969

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-2026-84969

mongo-c-driver

Source reference: /affected/0/package/name

Affected versions: 1.30.4-1
Source reference: /affected/0/versions
1.30.4-1+deb13u1
Source reference: /affected/0/versions
1.30.4-1+deb13u2
Source reference: /affected/0/versions
1.30.4-1+deb13u3
Source reference: /affected/0/versions
2.0.2-1
Source reference: /affected/0/versions
2.1.0-1
Source reference: /affected/0/versions
2.1.1-1
Source reference: /affected/0/versions
2.1.2-1
Source reference: /affected/0/versions
2.2.0-1
Source reference: /affected/0/versions
2.2.1-1
Source reference: /affected/0/versions
2.2.2-1
Source reference: /affected/0/versions
2.2.3-1
Source reference: /affected/0/versions
2.2.4-1
Source reference: /affected/0/versions
2.3.0-1
Source reference: /affected/0/versions
2.3.1-1
Source reference: /affected/0/versions
2.3.2-1
Source reference: /affected/0/versions
2.3.3-1
Source reference: /affected/0/versions
2.4.0-1
Source reference: /affected/0/versions
2.5.0-1
Source reference: /affected/0/versions
2.5.1-1
Source reference: /affected/0/versions
2.5.2-1
Source reference: /affected/0/versions
2.5.3-1
Source reference: /affected/0/versions
2.5.5-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

mongo-c-driver

Source reference: /affected/1/package/name

Affected versions: 1.30.4-1
Source reference: /affected/1/versions
2.0.2-1
Source reference: /affected/1/versions
2.1.0-1
Source reference: /affected/1/versions
2.1.1-1
Source reference: /affected/1/versions
2.1.2-1
Source reference: /affected/1/versions
2.2.0-1
Source reference: /affected/1/versions
2.2.1-1
Source reference: /affected/1/versions
2.2.2-1
Source reference: /affected/1/versions
2.2.3-1
Source reference: /affected/1/versions
2.2.4-1
Source reference: /affected/1/versions
2.3.0-1
Source reference: /affected/1/versions
2.3.1-1
Source reference: /affected/1/versions
2.3.2-1
Source reference: /affected/1/versions
2.3.3-1
Source reference: /affected/1/versions
2.4.0-1
Source reference: /affected/1/versions
2.5.0-1
Source reference: /affected/1/versions
2.5.1-1
Source reference: /affected/1/versions
Fixed versions: 2.5.2-1
Source reference: /affected/1/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": "mongo-c-driver",
      "purl": "pkg:deb/debian/mongo-c-driver?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.30.4-1",
      "1.30.4-1+deb13u1",
      "1.30.4-1+deb13u2",
      "1.30.4-1+deb13u3",
      "2.0.2-1",
      "2.1.0-1",
      "2.1.1-1",
      "2.1.2-1",
      "2.2.0-1",
      "2.2.1-1",
      "2.2.2-1",
      "2.2.3-1",
      "2.2.4-1",
      "2.3.0-1",
      "2.3.1-1",
      "2.3.2-1",
      "2.3.3-1",
      "2.4.0-1",
      "2.5.0-1",
      "2.5.1-1",
      "2.5.2-1",
      "2.5.3-1",
      "2.5.5-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84969.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.5.2-1"
          }
        ]
      }
    ],
    "package": {
      "name": "mongo-c-driver",
      "purl": "pkg:deb/debian/mongo-c-driver?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.30.4-1",
      "2.0.2-1",
      "2.1.0-1",
      "2.1.1-1",
      "2.1.2-1",
      "2.2.0-1",
      "2.2.1-1",
      "2.2.2-1",
      "2.2.3-1",
      "2.2.4-1",
      "2.3.0-1",
      "2.3.1-1",
      "2.3.2-1",
      "2.3.3-1",
      "2.4.0-1",
      "2.5.0-1",
      "2.5.1-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84969.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #58218 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 17:46:21 GMT
Publisher date: Thu, 03 Sep 2026 15:17:36 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-84969 · Revision 1Source updated