CVE catalog

CVE-2020-7921

UBUNTU-

[CVE catalog]

Improper serialization of internal state in the authorization subsystem in MongoDB Server's authorization subsystem permits a user with valid credentials to bypass IP whitelisting protection mechanisms following administrative action. This issue affects MongoDB Server v4.2 versions prior to 4.2.3; MongoDB Server v4.0 versions prior to 4.0.15; MongoDB Server v4.3 versions prior to 4.3.3and MongoDB Server v3.6 versions prior to 3.6.18.

Severity
Medium · CVSS 5.3CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.66% · Oct 27, 2026

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / releasePackageVersionStatusSource
Ubuntupromongodb1:3.4.14-3ubuntu1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.14-3ubuntu2UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.7-1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.7-1ubuntu1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.7-1ubuntu2UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.7-1ubuntu4UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.3UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.4UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.4+esm1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.4+esm2UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]

Showing 12 observations. All 17 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence
Distribution / releasePackageVersionStatusSource
Ubuntupromongodb1:3.4.14-3ubuntu1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.14-3ubuntu2UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.7-1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.7-1ubuntu1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.7-1ubuntu2UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.4.7-1ubuntu4UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.3UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.4UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.4+esm1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.3-0ubuntu1.4+esm2UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu2UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.2UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Ubuntupromongodb1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1UnknownSource applicability is not established[UBUNTU-CVE-2020-7921]
Original provider fields
{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "mongodb",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "1:3.4.7-1",
        "1:3.4.7-1ubuntu1",
        "1:3.4.7-1ubuntu2",
        "1:3.4.7-1ubuntu4",
        "1:3.4.14-3ubuntu1",
        "1:3.4.14-3ubuntu2",
        "1:3.6.3-0ubuntu1",
        "1:3.6.3-0ubuntu1.1",
        "1:3.6.3-0ubuntu1.3",
        "1:3.6.3-0ubuntu1.4",
        "1:3.6.3-0ubuntu1.4+esm1",
        "1:3.6.3-0ubuntu1.4+esm2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-7921",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-7921",
      "provider_updated_at": "2026-04-13T10:52:09.546537Z",
      "applicability_unknown": true
    },
    {
      "name": "mongodb",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu2",
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5",
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.2",
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3",
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-7921",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-7921",
      "provider_updated_at": "2026-04-13T10:52:09.546537Z",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

Observed:

References

[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]