{"id":"UBUNTU-CVE-2026-115732","details":"Incorrect authorization in the certificate-name matching of trapperkeeper-authorization, as used by Puppet Server, in the affected products, allows a client that holds a CA-signed certificate whose name extends or shortens an authorized hostname to be authorized as that host. This enables impersonation of other nodes and, in Puppet Enterprise, access to certificate-authority administration and remote command execution on managed nodes. Exploitation requires a certificate with a colliding name, which the certificate authority issues by approval or autosign.","modified":"2026-11-05T11:46:54.682504144Z","published":"2026-11-03T21:17:00Z","upstream":["CVE-2026-115732"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-115732"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-115732"},{"type":"REPORT","url":"https://portal.perforce.com/s/cve/a91Qi000003IaJRIA0/certificate-name-authorization-bypass"}],"affected":[{"package":{"name":"puppetserver","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/puppetserver?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.9.5-2","8.4.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"puppet-master","binary_version":"8.4.0-1"},{"binary_version":"8.4.0-1","binary_name":"puppet-master-passenger"},{"binary_name":"puppetserver","binary_version":"8.4.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115732.json"}},{"package":{"name":"puppetserver","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/puppetserver?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.7.0-6ubuntu1","8.7.0-6ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"puppetserver","binary_version":"8.7.0-6ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115732.json"}},{"package":{"name":"puppetserver","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/puppetserver?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.7.0-3","8.7.0-6","8.7.0-6ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"8.7.0-6ubuntu1","binary_name":"puppetserver"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115732.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"},{"type":"Ubuntu","score":"medium"}]}