{"id":"UBUNTU-CVE-2026-73196","details":"A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.","modified":"2026-09-02T19:36:30.407642759Z","published":"2026-08-20T11:16:00Z","upstream":["CVE-2026-73196"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-73196"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-73196"}],"affected":[{"package":{"name":"freeipa","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/freeipa?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.1-0ubuntu1","3.3.4-0ubuntu1","3.3.4-0ubuntu2","3.3.4-0ubuntu3","3.3.4-0ubuntu3.1","3.3.4-0ubuntu3.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.3.4-0ubuntu3.1+esm1","binary_name":"freeipa-client"},{"binary_version":"3.3.4-0ubuntu3.1+esm1","binary_name":"python-freeipa"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73196.json"}},{"package":{"name":"freeipa","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/freeipa?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.4-1","4.3.1-0ubuntu1","4.3.1-0ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"freeipa-admintools","binary_version":"4.3.1-0ubuntu1+esm1"},{"binary_version":"4.3.1-0ubuntu1+esm1","binary_name":"freeipa-client"},{"binary_version":"4.3.1-0ubuntu1+esm1","binary_name":"freeipa-common"},{"binary_version":"4.3.1-0ubuntu1+esm1","binary_name":"freeipa-server"},{"binary_name":"freeipa-server-dns","binary_version":"4.3.1-0ubuntu1+esm1"},{"binary_version":"4.3.1-0ubuntu1+esm1","binary_name":"freeipa-server-trust-ad"},{"binary_name":"freeipa-tests","binary_version":"4.3.1-0ubuntu1+esm1"},{"binary_name":"python-ipaclient","binary_version":"4.3.1-0ubuntu1+esm1"},{"binary_name":"python-ipalib","binary_version":"4.3.1-0ubuntu1+esm1"},{"binary_name":"python-ipaserver","binary_version":"4.3.1-0ubuntu1+esm1"},{"binary_version":"4.3.1-0ubuntu1+esm1","binary_name":"python-ipatests"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73196.json"}},{"package":{"name":"freeipa","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/freeipa?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.4-3ubuntu1","4.4.4-4","4.7.0~pre1+git20180411-2ubuntu1","4.7.0~pre1+git20180411-2ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"freeipa-admintools","binary_version":"4.7.0~pre1+git20180411-2ubuntu2"},{"binary_version":"4.7.0~pre1+git20180411-2ubuntu2","binary_name":"freeipa-client"},{"binary_name":"freeipa-common","binary_version":"4.7.0~pre1+git20180411-2ubuntu2"},{"binary_version":"4.7.0~pre1+git20180411-2ubuntu2","binary_name":"freeipa-server"},{"binary_version":"4.7.0~pre1+git20180411-2ubuntu2","binary_name":"freeipa-server-dns"},{"binary_version":"4.7.0~pre1+git20180411-2ubuntu2","binary_name":"freeipa-server-trust-ad"},{"binary_version":"4.7.0~pre1+git20180411-2ubuntu2","binary_name":"freeipa-tests"},{"binary_version":"4.7.0~pre1+git20180411-2ubuntu2","binary_name":"python-ipaclient"},{"binary_name":"python-ipalib","binary_version":"4.7.0~pre1+git20180411-2ubuntu2"},{"binary_name":"python-ipaserver","binary_version":"4.7.0~pre1+git20180411-2ubuntu2"},{"binary_name":"python-ipatests","binary_version":"4.7.0~pre1+git20180411-2ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73196.json"}},{"package":{"name":"freeipa","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/freeipa?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.1-2ubuntu1","4.8.3-1","4.8.6-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"4.8.6-1ubuntu2","binary_name":"freeipa-client"},{"binary_name":"freeipa-client-samba","binary_version":"4.8.6-1ubuntu2"},{"binary_version":"4.8.6-1ubuntu2","binary_name":"freeipa-common"},{"binary_version":"4.8.6-1ubuntu2","binary_name":"python3-ipaclient"},{"binary_name":"python3-ipalib","binary_version":"4.8.6-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73196.json"}},{"package":{"name":"freeipa","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/freeipa?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.6-1ubuntu6","4.8.6-1ubuntu8","4.8.6-1ubuntu9","4.9.8-1"],"ecosystem_specific":{"binaries":[{"binary_name":"freeipa-client","binary_version":"4.9.8-1"},{"binary_name":"freeipa-client-epn","binary_version":"4.9.8-1"},{"binary_name":"freeipa-client-samba","binary_version":"4.9.8-1"},{"binary_name":"freeipa-common","binary_version":"4.9.8-1"},{"binary_name":"python3-ipaclient","binary_version":"4.9.8-1"},{"binary_name":"python3-ipalib","binary_version":"4.9.8-1"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