{"id":"CVE-2026-26076","summary":"ntpd-rs affected by excessive CPU load from malformed packets","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.","aliases":["GHSA-c7j7-rmvr-fjmv"],"modified":"2026-08-12T03:51:10.256549536Z","published":"2026-02-12T21:48:44.651Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26076.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"fixed":"1.7.1"}]}]},"references":[{"type":"WEB","url":"https://github.com/pendulum-project/ntpd-rs/releases/tag/v1.7.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26076.json"},{"type":"ADVISORY","url":"https://github.com/pendulum-project/ntpd-rs/security/advisories/GHSA-c7j7-rmvr-fjmv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26076"},{"type":"FIX","url":"https://github.com/pendulum-project/ntpd-rs/commit/fa73af14d17b666b1142b9fee3ba22c18a841d24"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pendulum-project/ntpd-rs","events":[{"introduced":"0"},{"fixed":"fa73af14d17b666b1142b9fee3ba22c18a841d24"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v1.1.1","v1.1.1-alpha.20240119","v1.1.1-alpha.20231221","v1.1.0-alpha.20231123","v1.0.0","v1.0.0-rc.5","v1.0.0-rc.4","v1.0.0-rc.3","v1.0.0-rc.2","v1.0.0-rc.1","v1.0.0-dev.20230907","v0.3.6","v0.3.5","v0.3.3","v0.3.2","v0.3.1","v0.3.0-alpha.4","v0.3.0-alpha.3","v0.2.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26076.json"}}],"schema_version":"1.9.0","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"}]}