{"id":"UBUNTU-CVE-2026-5170","details":"A user with access to the cluster with a limited set of privilege actions can trigger a crash of a mongod process during the limited and unpredictable window when the cluster is being promoted from a replica set to a sharded cluster. This may cause a denial of service by taking down the primary of the replica set. This issue affects MongoDB Server v8.2 versions prior to 8.2.2, MongoDB Server v8.0 versions between 8.0.18, MongoDB Server v7.0 versions between 7.0.31.","modified":"2026-04-22T16:34:49.039727Z","published":"2026-03-30T16:16:00Z","upstream":["CVE-2026-5170"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-5170"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-5170"},{"type":"REPORT","url":"https://jira.mongodb.org/browse/SERVER-101758"}],"affected":[{"package":{"name":"mongodb","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/mongodb@1:2.4.9-1ubuntu2+esm2?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.4.6-0ubuntu5","1:2.4.6-0ubuntu6","1:2.4.8-1ubuntu1","1:2.4.8-2","1:2.4.9-1","1:2.4.9-1ubuntu1","1:2.4.9-1ubuntu2","1:2.4.9-1ubuntu2+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.4.9-1ubuntu2+esm2","binary_name":"mongodb"},{"binary_version":"1:2.4.9-1ubuntu2+esm2","binary_name":"mongodb-clients"},{"binary_version":"1:2.4.9-1ubuntu2+esm2","binary_name":"mongodb-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5170.json"}},{"package":{"name":"mongodb","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/mongodb@1:2.6.10-0ubuntu1+esm2?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.6.10-0ubuntu1","1:2.6.10-0ubuntu1+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.6.10-0ubuntu1+esm2","binary_name":"mongodb"},{"binary_version":"1:2.6.10-0ubuntu1+esm2","binary_name":"mongodb-clients"},{"binary_version":"1:2.6.10-0ubuntu1+esm2","binary_name":"mongodb-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5170.json"}},{"package":{"name":"mongodb","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/mongodb@1:3.6.3-0ubuntu1.4+esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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_specific":{"binaries":[{"binary_version":"1:3.6.3-0ubuntu1.4+esm2","binary_name":"mongodb"},{"binary_version":"1:3.6.3-0ubuntu1.4+esm2","binary_name":"mongodb-clients"},{"binary_version":"1:3.6.3-0ubuntu1.4+esm2","binary_name":"mongodb-server"},{"binary_version":"1:3.6.3-0ubuntu1.4+esm2","binary_name":"mongodb-server-core"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5170.json"}},{"package":{"name":"mongodb","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/mongodb@1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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_specific":{"binaries":[{"binary_version":"1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1","binary_name":"mongodb"},{"binary_version":"1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1","binary_name":"mongodb-clients"},{"binary_version":"1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1","binary_name":"mongodb-server"},{"binary_version":"1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1","binary_name":"mongodb-server-core"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5170.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}