{"id":"UBUNTU-CVE-2026-26076","details":"ntpd-rs is a full-featured implementation of the Network Time Protocol. Prior to 1.7.1, an attacker can remotely induce moderate increases (2-4 times above normal) in cpu usage. When having NTS enabled on an ntpd-rs server, an attacker can create malformed NTS packets that take significantly more effort for the server to respond to by requesting a large number of cookies. This can lead to degraded server performance even when a server could otherwise handle the load. This vulnerability is fixed in 1.7.1.","modified":"2026-05-20T16:24:49.151120130Z","published":"2026-02-12T22:16:00Z","upstream":["CVE-2026-26076"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-26076"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-26076"},{"type":"REPORT","url":"https://github.com/pendulum-project/ntpd-rs/commit/fa73af14d17b666b1142b9fee3ba22c18a841d24"},{"type":"REPORT","url":"https://github.com/pendulum-project/ntpd-rs/releases/tag/v1.7.1"},{"type":"REPORT","url":"https://github.com/pendulum-project/ntpd-rs/security/advisories/GHSA-c7j7-rmvr-fjmv"}],"affected":[{"package":{"name":"rust-ntpd","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/rust-ntpd?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-5","1.1.0-2","1.1.0-3","1.1.1-1","1.1.1-2","1.1.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ntpd-rs","binary_version":"1.1.2-1"},{"binary_version":"1.1.2-1","binary_name":"ntpd-rs-metrics"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26076.json"}},{"package":{"name":"rust-ntpd","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/rust-ntpd?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1build1","1.4.0-6"],"ecosystem_specific":{"binaries":[{"binary_name":"ntpd-rs","binary_version":"1.4.0-6"},{"binary_name":"ntpd-rs-metrics","binary_version":"1.4.0-6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26076.json"}},{"package":{"name":"rust-ntpd","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rust-ntpd?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0-6","1.6.2-2","1.6.2-3","1.6.2-4","1.7.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.7.1-1","binary_name":"ntpd-rs"},{"binary_version":"1.7.1-1","binary_name":"ntpd-rs-metrics"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26076.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}